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Search Engine Web Crawers
By 1a2b | September 18, 2008
Most search engines use what is known as a web crawler. The web
crawler “crawls” through the site, inspecting the content of
each and every page before assigning it a classification. The
web crawler’s determination is going to be what decides a site’s
positioning on a search engine search using the following
criteria:
1) Keyword frequency. The number of times a word appears in the
pages of a site is a pretty good indicator of how the site is
related to it. If you are listening to someone speak with half
an ear and you hear the word “manicure” every five to ten
seconds you can make a pretty educated guess that they’re
talking about getting (or giving) a manicure. If a word appears
over and over again in a site the crawler assumes the two are
related, and it will classify them accordingly.
2) Of course, you don’t want a keyword to appear too often. If
you’re trying to set up the content of your website so that a
particular keyword repeats over and over you may find yourself
slapped with a big fat SPAM sticker.
3) Titles and the first few lines of each page. Because a web
spider can’t read it pays special attention to the words which
appear in the title and first few lines of each individual page,
assuming that the title and introduction will be set up to tell
the reader right off the bat what they’re talking about. (The
Internet is a great tool for leaching away your creativity,
since a site built for a company selling molassas with the
title, “Catching Bugs the Easy Way” probably isn’t going to be
listed in the “Food Department”
Using these three criteria a webcrawler will then index the site
as being relevant to this word or that, more relevant than this
one and less so than that. The sites that are rated as being the
most relevant will earn that coveted position at the top of the
search engine index and, as a result, receive the greatest
amount of traffic.
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One Response to “Search Engine Web Crawers”
Comments
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March 21st, 2009 at 3:48 am
hey id like to talk with you about your blog. please email me – thanks.