Since Facebook has added the “Like” button to the whole Internet (and now the real world), the social feature is seeping into other sites, especially third-party search results. OneRiot, which indexes the real time web, has already started indexing Likes.

The strategy is a marked shift for Facebook, notes VentureBeat. It’s the first time the service has allowed even its public social data (ie anything beyond the basic profile search page) to be indexed by search engines. Even last year, Facebook only allowed access to its walled garden by signing search deals.

OneRiot can sort links shared in real media time by chronology or popularity. Tweets, Diggs and now Likes count toward that measure of popularity. It may not be one of the big three in search—but their results should be. After a real-time search deal with Yahoo last fall, OneRiot is supposed to provide real-time search results within Yahoo’s results, including Twitter and now Facebook likes. However, just over a month later, Yahoo moved in on Twitter, and now it appears that Twitter is the only site Yahoo recognizes for “real time results.”

Which is really disappointing, actually. If anyone can find some non-Twitter real time results on Yahoo, let me know. But then again, research has shown that real time search results, including those from Twitter, may not be useful at all.

What do you think? Will the big three follow in OneRiot’s footsteps?