The ranking of each site in a search engine query is based on how the keywords listed in the query match with the site content. Each search engine uses a different algorithm to calculate relevancy, although they are usually a combination of link popularity, meta tag content, and body content. Another factor is age. For example, a site that was recently checked by the search engine's spider will place higher than a similar site that was last checked 6 months ago. It is generally a good idea to resubmit your sites about once a month.
Robot See spider .
Search Engine A search engine contains a searchable catalog of Websites that have been indexed by an automated program called a spider . Unlike a directory , search engines rank their content using an algorithm instead of old-fashioned humans. Some common search engines are AltaVista, HotBot, and Excite. For more information, you can check out the next course, Search Engines and Directories 101 . Spam, Spamdexing Spam refers to uninvited and irrelevant content such as bulk email.