From corporate-sponsored "Cool Apps" to niche spin-offs like Bakespace, Virb and I'm In Like With You, online communities are still largely about socializing and/or wasting time. Their potential as powerful tools for the greater good—beyond finding out where the party's at—has been largely untapped, but we managed to find a few. The following are some of the latest and best sites where social networking meets …
Social Networking for a Cause
