Diaspora* is a decentralized alternative to facebook
Diaspora* is a set of small servers called pods created anywhere in the world and managed by administrators with different visions
My personal experience on the other hand dictates me to warn you that some pod administrators have a tendency to censor and others are totally against it.
My address
Do a search : leshoshin@pod.dapor.net
Suggestion of pod that does not practice censorship