Mash posted an article on how people are spending 3x more time on facebook than google and acted like that is a big worry. It should not be a huge worry as people go to facebook to socialize not to buy or search. It would be like your local Mall getting upset because people are going to their homes. Eye balls are important but I think someone forgot what metrics are really important when you look at the big picture…
Google has the brand and they are not going to be loosing searches to FaceBook, and FaceBook is not a search engine. At most Google just needs to angle for the searches coming out of facebook but those won’t be massive.