SEO Glossary.
Glossary of search
engine optimisation (SEO)
terms.
Algorithm - A complex
mathematical formula used by a search engine to rank
the web pages that it finds by crawling the web.
ALT Tags - Used to
display a short text description of an image when you hover
your mouse over it. The ALT description is also displayed
in place of the image if the user is browsing with image display
turned off.
Image ALT tags are useful to your page's visitors.
Equally as important, they can help with your search
engine rankings by increasing the keyword
density (if you use your keywords
in your ALT tags).
Example:
<img src="blue-widget.jpg" width="156"
height="175"
ALT="Photo of blue widget">
Altavista.com
- Search engine owned by Overture.
AOL - America Online search
engine.
Apache Web Server
- The web server
software that is most used on the internet today.
ASK.com - Ask Jeeves
search engine, uses Google's
sponsored links (PPC).
Bad Neighborhood
- A web page that has been penalised
by a search engine (most notably Google)
for using shady SEO
tactics, such as hidden
text or link
farms.
Backlinks - Links
from another web page to your web page. Most search engines
provide an easy way to get a list of all of the backlinks
to a specific page. Also referred to as Inbound
Links.
Broken Link - A
link
that no longer takes the user to the destination page when
it is clicked on. This is usually the result of the destination
page having been renamed or deleted from the server.
Also referred to as a Dead
Link.
Click-Through
- The action of clicking on a link
to visit a web page.
Click-Through-Rate
(CTR) - The number of times a link
is clicked on divided by the number of times that same link
is displayed (called an impression).
Example:
A link
is displayed 100 times (100 impressions) and clicked
on 5 times. The CTR is 5% (5/100=.05).
Cloaking - Serving
one version of a page to a human visitor and a different version
of the same page to the search engines. This is usually done
to "fool" the search engines into giving the page
a higher rank than it would normally receive while making
sure the human visitor sees a useful and attractive page.
Note: Cloaking is discouraged by most major search engines,
including Google.
Comment Tags -
Used in a web page's HTML source code to indicate certain
information about a section of the page code. Some search
engines will consider keywords
contained in comment tags for keyword
density purposes, others (including Google)
will not.
Example:
<!--This is a comment-->
Content - The information
located on a web page. This includes text, images, and any
other types of information that a webmaster places on the
page.
Counter - A script
that counts the number of hits,
unique
visitors, and/or page
views that a web page (or an entire site) receives. These
"stats" provide very useful information for the
webmaster.
Crawler - A program
used by search engines to "crawl" the web by following
links from page to page. This is how most search engines "find"
the web pages that they place in their index.
Also referred to as a spider
or robot.
Crawling The Web
- Search engines use crawlers
to move from web page to web page by following the links
on the pages. The pages "found" are then ranked
using an algorithm
and indexed into the search engine database.
Cross Linking
- This is where the owner of two or more websites interlink
the sites in order to boost their search engine rankings.
If detected, cross linking often results in a search engine
penalty.
Dead Link - See Broken
Link.
Deep Linking -
Linking to a page that is one or more levels removed from
the home
directory. Deep
linking is often desirable to build PageRank
to a specific page on a website.
Description -
A short sentence or paragraph that describes a web page's
content, usually used as part of a link
to describe the page being linked to. See also link
anchor text.
Description Meta Tag
- A meta tag that describes the content of the web page in
which it is found. Used by some search engines for keyword
density purposes. Also, some SE's will use the description
meta tag for the description provided to a user when the page
is returned in a listing of search results. It is recommended
that you use a couple of your targeted keywords in the description
meta tag.
Example:
<META NAME="Description" CONTENT="This sentence
describes the content on this page.">
Directory - A categorised
list of websites that is maintained by human editors instead
of crawlers. Yahoo.com
is the most widely recognised directory on the web, but there
are literally thousands of others.
Domain - The human-friendly
"address, or URL"
of a website. When a user types a URL into a web browser,
a dedicated computer somewhere on the web known as a Domain
Name Server, or DNS
translates the URL
into a discrete IP
address which is then used to find the actual website
being requested.
In the URL http://www.ukb2c.co.uk, ukb2c.co.uk is the
domain.
Domain Name Servers
(DNS) - These are special computers
that translate human-friendly URLs into computer-friendly
IP
addresses. This process takes place every time a user
requests a page from a website.
DNS Propagation
- Every time a new domain name is registered (or an existing
one is transferred to a new DNS),
the information about the domain
and the DNS
that hosts it must make its way around the entire internet.
This process usually takes around 24 hours, during which time
the domain will be inaccessible to users.
Doorway Page -
A page that is usually optimised
for a particular search engine and search term. Multiple doorway
pages are often used to help ensure that the same basic content
is ranked well on several different search engines. The use
of doorway pages for this purpose is frowned upon by most
larger search engines, including Google.
Duplicate Content
- Two or more separate web pages that contain substantially
the same content are said to contain duplicate content.
Google
and other top search engines have set up filters to detect
duplicate content when their crawlers are active on the web.
When pages containing duplicate content are detected, they
are often assessed a duplicate content penalty
which means a lowering of the page's ranking from what it
would have received naturally.
Dynamic Content
(dynamic pages)
- Web pages that are often generated from database information
based upon queries initiated by users.
Dynamic pages often include the ? character in the URL.
The URLs
of dynamic pages often use these extensions: .asp, .cfm, .cgm,
or .cgi. Most search engines don't index dynamic content very
well (or at all). Google
has recently been doing a better job at indexing them however.
Dynamic IP Address
- An IP
address that changes every time a computer logs on to
the internet. See also Static
IP Address.
Excite.com - Search
engine owned by Ask
Jeeves.
Filters - A filter
is a software routine that examines web pages during a robot's
crawl
looking for search engine spam.
If the filter detects the use of spam
on the page, a ranking
penalty
is assessed.
Common filters look for hidden
text, links
to bad
neighborhoods, and many other SEO
techniques that the search engine doesn't like.
Google.com - The
leading search engine on the internet today with approximately
80% of all search traffic. When people speak of search
engine optimisation (SEO),
they're often referring specifically to Google.
Googlebot - The
crawler that Google uses on a daily basis to find and index
new web pages.
Google Adwords
- With Google
AdWords you create your own ads, choose keywords
to help match your ads to your audience and pay only when
someone clicks on them.
Google Sitemap
- Google Sitemaps is an easy way for you to submit all your
URLs
to the Google
index and get detailed reports about the visibility of your
pages on Google. With Google Sitemaps you can automatically
keep us informed of all your web pages, and when you make
changes to these pages to help improve your coverage in the
Google crawl.
Google Toolbar
- A downloadable toolbar for Internet Explorer that allows
a user to do a Google
search without visiting the Google
website. The toolbar also displays the Google
PageRank
(PR) of the page currently displayed in the browser. The
latest version also includes a very good popup-blocker. The
Google
Toolbar is a must have for every serious webmaster.
Header Tags - HTML
tags that help outline a web page or draw attention to important
information. Keywords
located inside header tags can provide a rankings boost in
the search engines.
Examples:
<h1>This is an H1 tag.</h1>
<h2>This is an H2 tag.</h2>
Hidden Text and
Hidden Links -
Using a text font that is the same (or nearly the same) color
as the background color, rendering the text or link
invisible or very difficult to read. The same effect can also
be achieved by using various HTML tricks.
Hidden text and hidden links are often used to artificially
increase a web page's keyword
density for a keyword or keyphrase and/or to artificially
boost the link popularity of other pages on your site(s).
The use of hidden text and hidden links is frowned upon by
Google
and most other search engines. Using them will most likely
result in your web page(s) incurring a penalty
by the search engines.
Hits - The term hits
is commonly misused. Many people think of a hit as a visit
to one of their web pages. This is incorrect. A hit takes
place every time a file is accessed on your website.
For example, let's say your friend's home page has a logo
gif and 12 pictures on it. Every time a visitor loads that
page, 14 hits are recorded: 1 for the logo gif, 12 for the
pictures, and one for the page itself. So don't be all that
impressed if he boasts that his site receives 1000 hits a
day. In our example, those 1000 hits could have been generated
by as few as 72 visitors to the site.
The only meaningful way to evaluate the traffic
flow of a site is to consider the average daily or monthly
number of unique visitors
and page
views a site receives.
Home Directory
- The main directory where your site's main index page is
located. The index page in your home directory can be accessed
like this: http://www.ukb2c.co.uk
Image Map - Placing
separate hyperlinks on different areas of the same image.
Clicking on different parts of the image will take the user
to different web pages. Not very search engine friendly.
Inbound Links
- See Backlinks.
Index - The list of
web pages stored and ranked by a search engine. Also known
as a database.
Indexing - After
a search engine has crawled the web, it ranks the URLs found
using various criteria (see algorithm)
and places them in the database, or index.
IP Address - A unique
numerical Internet Protocol Address (IP Address) that is assigned
to every computer that connects to the internet. IP addresses
can be either static
(never unchanging) or dynamic
(changes with every internet connection).
Your computer's IP address is what enables it to be "found"
on the internet in order to receive email, web pages, etc.
Example:
216.239.36.10
IP Spoofing - Returning
an IP
address that is different from the one that is actually
assigned to the destination website. This is often done with
redirects.
A huge no-no (it's even a criminal offense when done under
certain circumstances).
Keyword (Key Phrase)
- A word or phrase typed into a search engine in order to
find web pages that contain that word or phrase. A web page
can (and should be) optimised
for specific keywords/phrases that are relevant to the content
on that page.
Keywords Meta Tag
- An HTML meta tag that lists all of the main keywords and
key phrases that are contained on that web page. Some search
engines use the keyword
meta tag to help rank web pages in their databases. Google
does not.
Example:
<META NAME="KEYWORDS" CONTENT="small business,
business,advertising,sales">
Link Anchor Text
- The "clickable" part of the link
structure. Using keywords
in the link anchor
text of your inbound
links will help your search engine rankings
for those keywords.
Example:
<a href="http://www.diy-seo.com">This
is the link
anchor text for this link</a>
Link Exchange
- Placing a link
to another website on your own site in exchange for a return
link back. Also known as reciprocal
linking.
Link Farm - A web
page created solely for search engine ranking purposes that
consists almost entirely of a long list of unrelated links.
These types of pages are penalised
by almost all search engines, including Google.
Link Popularity
- A measure of how "popular" a web page is on the
internet as measured by the number of
inbound links pointing to your web page. Link popularity
is one of the main factors used to help determine search engine
rankings.
Linking - Placing
a link to another web page (usually on another web site) on
one of your own web pages.
Links - URLs placed
within a web page so that when they're clicked on the browser
is served with a different web page, often on a completely
different web site.
Log Files - Files
that are constantly and automatically created and updated
on your web server
that provide very specific details about the activities taking
place on your web site.
This includes referring URLs,
IP
addresses, pages visited, errors generated, number of
unique
visitors, total page
views, total hits,
and much more. Carefully reviewing your log files can provide
valuable information about your site's performance and visitors.
Lycos.com - Search
engine owned by Carnegie Mellon University.
Meta Search Engine
- A website that takes your search
query and passes it on to several different search engines
and directories, then summarizes the results in a logical
manner for you to review.
Mirror Sites -
Identical, but separate websites on different domains.
They are commonly used legitimately by large websites to share
heavy server
loads, and by search engine spammers
to generate more search engine referrals and revenue.
In general, the search engines frown upon mirror sites and
do not hesitate to assess duplicate content penalties
when they feel they are warranted.
MSN.com - Microsofts
search engine, also runs Overture
PPC
adverts.
Outbound Links
- Links
from your web page to another web page.
Overture - Search
engine Pay
Per Click pioneers, owned by Yahoo.
PageRank (PR) - A
proprietary numerical score that is assigned by Google
to every web page in their index.
PR for each page is calculated by Google
using a special mathematical algorithm,
based on the number and quality (as determined by Google)
of the inbound
links to the page.
PageRank (PR) For Money
- Selling or buying a link
from a web page with a high Google
PageRank
for the stated purpose of increasing the other page's PR.
This is highly frowned upon by Google
and will result in a penalty
for both pages if Google
finds out about it.
Page Views - Each
time a web page on a site is accessed by a visitor,
it counts as one page view. It doesn't matter if the same
user
viewed the same page 5 minutes ago, it still represents another
page
view.
For example, let's say that a website receives two unique
visitors in one day. The first visitor surfs around the
site and views a total of six pages. The second visitor views
11 pages. This represents 17 page views for the day by two
unique
visitors. (This poor webmaster needs to do some serious
SEO
and site
promotion!)
Paid Inclusion
- Some directories will only consider placing your URL
into their database if you pay them a fee.
Yahoo
charges a $299 per year evaluation fee for commercial sites.
Note that this fee doesn't guarantee that your URL
will be accepted and placed in the Yahoo
database, but rather that Yahoo
will consider your site for inclusion in a timely manner.
If your site is rejected, you're just out your $299. But you
do have an opportunity to appeal the decision.
Other smaller directories will guarantee to list your site
upon payment of their fee, provided that your site meets their
guidelines
(these are clearly explained ahead of time).
Many search engines also have a paid
inclusion program, including Inktomi and Alta
Vista. You don't have to pay to be included in search
engines however. If you have a few quality inbound
links to your site, the search engines will find and index
your site on their own eventually.
The advantage of utilizing their paid inclusion services
is they'll usually crawl
and index your site within 48 hours or less instead of the
weeks or even months that it often takes otherwise.
Pay-Per-Click (PPC)
Search Engines - This is a traffic
generating method where a search engine or directory places
your link
in their searchable database and charges you a fee every time
your URL
comes up in a search and it gets clicked on. The amount of
the fee that you pay is usually determined by bidding on keywords
or keyphrases.
The two largest PPC
search engines are Overture
and Google
AdWords. There are also numerous smaller PPC
engines on the net, some very good a delivering affordable
targeted traffic,
others not.
Penalty - A punishment
levied against a web page by a search engine as a result of
using an SEO
tactic that it doesn't approve of. Tactics that most often
result in penalties include using hidden
text, sneaky redirects,
and linking to a bad
neighborhood.
A penalty usually results in a web page being credited for
a lower Google PageRank
(PR) than it has actually "earned". Penalties
also result in a page being "buried" deep within
the SERPS
where it will almost never be found again by searchers.
Rankings - The order
in which individual web pages are returned in the SERPS
for a given search
query. Search engines rank
the web pages based upon relevancy to your search terms according
to their proprietary algorithm.
Reciprocal Links
- Links to another website placed on your site in exchange
for links back to your site from theirs. This is a proven
way to build link popularity which is instrumental in getting
high search engine rankings.
Redirect - A tactic
sometimes used to send a user
to a different page that the one she found in the SERPS.
For example, a webmaster optimises a web page for a very popular
keyword.
When a user
finds the page by searching on that keyword,
he/she is subsequently redirected
to a different, possibly non-relevant page that the webmaster
stands ready to make money from.
This is considered to be an invalid use of a redirect
and the search engines (including Google)
will penalize
pages that use one in this manner.
Referrer or Referring URL
- The URL
of the web page where a visitor
clicked a link
to come to your site.
Relevancy - The
degree to which the content on a web page that is returned
in a list of search results (SERPS)
"matches" the topic of the information that the
user was searching for. In other words, if you use the search
phrase "small green widgets" and a page is returned
that deals with "large red thingamajigs", the relevancy
of that page is very poor.
Robot - A program used
by a search engine to crawl
the web in order to find, rank,
and index
new web pages.
Robots.txt - A special
file that is commonly used to exclude some or all robots
from crawling certain files or directories on a website. This
file should b placed in your website's root directory.
Search Engine Friendly
- A web page that has been designed and optimised for high
search engine rankings. A search engine friendly page also
makes it easy for search engines to follow the links on the
page.
Search Engine Guidelines
- Each search engine has its own set of guidelines which should
be followed wherever possible:
Google
Guidelines
Yahoo
Guidelines
MSN
Guidelines
Search Engine Optimisation
(SEO) - The process of optimising a web page
for high search engine rankings for a particular search term
or set of search terms.
Search Engine Optimisation Services
(SEO) - A company offering search engine
optimisation services.
Search Engine Results Pages (SERPS)
- The ranked listing of web pages that are returned for a
specific search
query.
Search Engine Placement
- Another term used for search
engine optimisation.
Search Engine Promotion
- Another term used for search
engine optimisation.
Search Query -
The keyword, keyphrase, or list of words that you type into
a search engine to find web pages on a topic that you're interested
in.
Search Term - A
list of keywords
or a keyphrase that a user types into a search engine to find
a list of web pages related to topic that he/she is interested
in.
SEO - See Search
Engine Optimisation.
Server - A computer
that hosts web pages and delivers them to a user's internet
browser when requested. A dedicated server
hosts one website only. A shared server
hosts multiple websites. Dedicated servers
deliver web pages faster and provide more capacity and features
than shared servers,
but they're also considerably more expensive to use.
SERPS - See Search
Engine Results Pages
Spam - When speaking
of search engines, spam
is loosely defined as any technique used to give your web
page(s) an unfair ranking advantage over other pages.
Spider - See Crawler.
Static IP Address
- An IP
address that is permanently assigned to a computer. The
IP
address doesn't change with each connection to the internet.
See also Dynamic
IP Address.
Submitting Your URLs
- This is the process of telling a search engine or directory
about your web pages. The URLs
that you submit are placed into a queue for later crawling
or human review.
If you have backlinks
pointing to your web pages, there is usually no need to submit
your URLs
to the search engines because their crawlers
will find the pages on their own and index
them. You do need to submit your URLs
to directories however because they use humans instead of
robots
to visit the sites that you submit and evaluate them.
Title Meta Tag
- This HTML tag is used to provide web browsers and search
engines with an "official" title for the page currently
being displayed. Using a couple of keywords in your title
tag can help boost the page's search engine ranking for those
keywords.
Example:
<META NAME="TITLE" CONTENT="Page title goes
here">
Top-10 Ranking
- A web page that is listed in the first 10 search results
for a search
query. Top-10 in Google
also means on the first page using the standard search criteria
Traffic - A website's
average rate of traffic
flow within a given time period. It can be measured in a couple
ways, including unique
visitors and total page
views. Don't confuse hits with unique
visitors and page
views. The term hits is virtually useless when evaluating
website traffic
statistics.
Unique Visitors
- The number of visitors
who access a website within a given time period (usually 24
hours) from a single IP
address. If you visit the same website three times within
a 24 hour period, your visits only count as one unique visit
for that day.
URL (Uniform Resource Locator)
- Each web page has it's own specific human-friendly URL,
or web address. URLs are mapped to computer-friendly IP
addresses by special computers called Domain
Name Servers, or DNSs.
Example:
http://www.ukb2c.co.uk
User - See Visitor.
Visitor - A person
who visits your website. Also known as a User.
Yahoo.com - Arguably
the second largest search engine and owner of Overture.
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