Thursday, April 12, 2007

Search Engines is a Mini-Science

Search engines are the No. 1 means of introducing new, prospective clients and visitors to a website. Therefore, it is savvy to know how search engines operate and how they present information to users conducting a search.

For starters, there are two main kinds of search engines. One is by robots known as “spiders” or “crawlers.” Search engines use these trademark spiders to index websites by “crawling them,” or looking for what’s most relevant. When pages are submitted to search engines through required submission pages, the spider will proceed in indexing your whole site. In essence, it is a automated program that is used by the search engine to read the content of a site, follow with its Meta tags, and follows the links appearing on the pages. All of this information is sent back to a central depository where all of the data is index. This spider will visit each link on your site and index those too. Many spiders are only capable (or willing) to index a few pages on a site, so don’t focus on making a 600 page site!
It doesn’t end here. The spiders return periodically to the sites to check for any changed information. Moderators of the search engines decide how often spiders crawl through a site.

Spiders almost act like books where it holds a table of content, the content, and the links and references for each website linked on the pages. Search engines are capable of indexing close to one million pages daily. These search engines include AltaVista, Google, Lycos, and Excite.
When a search engine is asked to target information, it is actually going through its created index and not searching the actual Web. Many search engines have varying rankings because of the different algorithms involved with searching through the indices.

Search engine algorithms are responsible for scanning the frequency and location of keywords on a page. In addition, it has an eye for spamming by detecting keyword stuffing or “spamdexing.” After this, algorithms get to work analyzing how the page links to other pages on the Internet. By checking for how many pages link to each other, search engines can guess correctly the site topic and if the keywords of the linked pages match the keywords on the original page.

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