10-16-2006, 08:30 AM
Quote:Search engines try to match words used in queries with words found on pages or in links pointing to those pages when providing search results.
Often, the order that pages are returned to a searcher are based upon an indexing of text on those pages, text in links pointing to those pages, and some measure of importance based upon link popularity.
Before pages are served to a viewer, however, they may be reranked for one reason or another. Here are some possibilities:
1. Filtering of duplicate, or near duplicate, content...
2. Removing multiple relevant pages from the same site...
full article and list of 20 ways results are reranked: http://www.seobythesea.com/?p=334