Its been tried before, in the late 90's there used to be search engine called 'Direct Hit'. Here is the 1999 blurb from their website via the Internet Archive:
Quote:
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Rather than building an index from the "bottom-up" by adding sites one at a time, Direct Hit takes a "top-down" approach by refining the relevancy of any large body of data, such as that generated by conventional search technologies or an open site submission process where users are allowed to submit sites. To refine these results, the Direct Hit Popularity Engine anonymously monitors which web sites Internet searchers select from the search results list, how much time the searchers spend at these sites and a number of other metrics, such as the position of a site relative to other sites. The sites that are selected by searchers are boosted in their ranking, while the sites that are consistently ignored by searchers are penalized in their rankings.
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There are lots of reasons why it doesn't work as a stand alone procedure not least that nearly half of all searches are unique, so there is no clickthrough data.
That is not to say that some kind of clickstream analysis is not being folded back into the Google algo. However the last time I asked a Google engineer if they used click data they said "not at the moment but they had looked at it." I took this to mean that they had experimented and not found it useful for improving the quality of the serps.
- Michael
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