Di Jeffrey F. Rayport, BusinessWeek

That’s big. It signals that Web companies are no longer in a race to build “destination sites” that attract vast numbers of users. Instead, social networking players are racing to extend their influence over the entire Web by exporting their social features to all sites.

Capito? Ambienti sociali aperti, non siti. Traffico dai siti, non sul sito. 🙂