Diaspora

Maintain control of your web info. Communicate directly, not through a corporate server like Facebook where your data security is vulnerable, but instead, use encrypted messages. Pledge to support Diaspora; I did.  You can get a cool shirt . . .

http://www.kickstarter.com/projects/196017994/diaspora-the-personally-controlled-do-it-all-distr#

or

http://www.joindiaspora.com

and, check out MetaFilter.  I just discovered it and plan to join.