Bill Slawski (SEO By the Sea) just wrote an excellent post called "20 Ways Search Engines May Rerank Search Results". Now some of this might be speculation, and some might be advanced ranking techniques that search engines just might be using, and few SEO’s know of. I’ve been thinking of doing a post on the topic of "Things Search Engines might be ranking pages on, but few people know of"…..but Bill seems to have covered this pretty well, so I’m out a future post.
Here’s just 2 great ones from Bill’s list of 20:
10. Changing orders based upon commercial intent
Similar to the method described above by virtue of the use of a slider, Yahoo! Mindset lets users determine the reordering of results based upon whether they want to see results that are more commercial in nature or informational.
BTW, if you haven’t used Yahoo! Mindset yet, it’s a great tool to play with.
15. Reordering based upon implicit feedback from user activities and click-throughs
There have been a lot of papers and patent filings that describe reordering of search results by looking at user behavior and query selections. Here’s one that describes looking at different queries over user sessions:
Now the above is a great point that I see few SEO’s talking about!
Bill is an expert at Search Engine Patents, so know that Bill’s speculations come by deep analysis of all the search engine patents and looking at them through the eyes of an SEO.