Diaspora/Website

Use diaspora* as your home base to post to your profiles on other major social services. This way your friends will still be able to keep in touch with what you’re up to, even if they’re not yet on diaspora*. diaspora* currently supports cross-posting to your Twitter, Tumblr, and WordPress accounts, with more to come.

Earthd*

Decentralized

(diaspora* uses open web standards such as %{pubsubhubbub} and %{webfinger} to make this kind of connection possible.)