Social Media become more and more important and Search Engines have already made in the past several deals with Twitter and Facebook in order to incorporate social media results in their SERPs. The fact that the buzz is a signal is no news for the industry, since we all suspected that it had to be used in order to determine trends, popularity, authority etc. Finally it is certain that in the following weeks we’ll have more info available and it is very likely to get additional indications on which factors are more important.