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Home >> SEO Glossary
Search Engine Optimisation Glossary
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IndexThe list of web pages stored and
ranked by a search engine. Also known as a database.
IndexingAfter 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 AddressA 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).
Image map
An image that has different clickable areas linked to
different pages. Image maps can either be imbedded in the HTML
code or called as an external file. Search engines usually
have difficulty spidering image maps when they are included
from external files.
Impression
One display of an image or advertisement.
Inbound link
When site A links to site B, site A has an outbound link and
site B has an inbound link . Inbound links are counted to
determine link popularity , an important factor in SEO .
Invisible text
Text on a web page that is exactly or almost the same color as
the background. The use of invisible text to load a page with
keywords was once a popular SEO technique, but search engines
can now detect invisible text and penalize sites that use it.
Although there are examples of sites that use invisible text
and "get away with it" on Google , the general consensus is
that it is not worth the risk. The same results can usually be
achieved by working the keywords into the visible body text.
Invisible web
A popular collective name for documents of types that search
engines do not typically index . Because they are not in any
search engine database , they can be very difficult to find
and are in a sense invisible. Recently a couple of specialized
search engines have begun an attempt to make the invisible web
more accessible.
IP SpoofingReturning 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).
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