CivicSpace

Via SmartMobs, an interesting piece of forthcoming software called CivicSpace. According to the site, it's based on DeanSpace, one of the pieces of social networking software that the Dean for President campaign used as an organizing tool. Salient bits from the description:

CivicSpace is being built with the needs of distributed organizations in mind. It will give you and the supporters within your community a solid framework for organizing and engaging those around you in action. But it also will allow you to plug your community into a network of other communities where you can share your ideas, knowledge, relationships, and organizational information.

No idea whether it'll work, or even come out, but the Dean guys did know how to organize the grassroots (or let the grassroots organize themselves, or something).