With the recent launch of Google Voice, google might end up having the best social network data of any social network, since they will essentially act as the ph

With the recent launch of Google Voice, google might end up having the best social network data of any social network, since they will essentially act as the phone company, your email provider(Gmail), and your instant messaging service(Gtalk). (i.e. they could know who all your friends were and how often you spoke to each of them) [this is assuming you aren't doing all your messaging through facebook]