I think the results from "social search" are in there, they're just incorporated at a deeper level.<p>I wish people who (tried to) write about search engines had a better understanding of modern information retrieval techniques (document similarity, use of metadata, bag of words, etc) and that results are no longer just keyword matching, but try to infer the users intent from context and past interactions.<p>Search engines could probably due a better job conveying this in the presentation of results.