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It's a new breed of software as a service, allowing users to manipulate existing content on social networking sites.
Zemble, now in a public beta version, is a free, group-based communication service that lets members send messages en masse to other members.
The myElections U.S. Election 2008 application builds out a possible electoral outcome based on the preferences of its users.
We're starting to see traditional code repositories complemented by new techniques that either layer tools for more casual contributors on top or that explicitly target lighter-weight collaboration from the get go.