Skype has some 220 million users, vs. Facebook’s 40 million. About 20% of these Skypers use the service all the time. They can already message and call each other through the network. They are already able to exchange files (in fact, that capability is more developed on Skype than on many existing social networks). If only Skype made it easier for people to post and exchange photos and videos, and allowed for postings of longer profiles, it could rival MySpace and its ilk, sustained through advertising and sponsorships.
Blog: Skype as a social network