The data is simply too dirty to be useful for anything other than novelty searches, and possibly searches involving the 1%(?) of people that actually put their life graph on FB.
Maybe next step is FB adds user web surfing data (aggregated?, permission-based?) but hard to see how FB could pull that off?
Maybe next step is FB adds user web surfing data (aggregated?, permission-based?) but hard to see how FB could pull that off?