Seems to me that Dropbox will have a pretty good asset here a la rapleaf. If they get enough people to voluntarily give them their twitter and facebook IDs, Dro

Seems to me that Dropbox will have a pretty good asset here a la rapleaf. If they get enough people to voluntarily give them their twitter and facebook IDs, Dropbox will have a very accurate lookup service of email|facebook|twitter -- that's something a lot of companies are after these days.