Apparently the Sandstorm team [1] recently ported MediaGoblin over, so this is particularly exciting. It looks like the big addition is that they're paving the path for federation, so soon there could well be an <i>actually</i> decentralized media sharing system...<p>[1] Sandstorm is an app sandboxing environment conceived by the designer of Protobuf/Cap'nProto; as an aside, the IndieGogo for Sandstorm is nearly funded, but ends in only 5 days... it was on HN recently, but otherwise, <a href="http://sandstorm.io" rel="nofollow">http://sandstorm.io</a>