The concept of Diaspora* is really promising: Decentralization and giving users back their data. That the code lacks many common features (liking comments e.g.) doesn't mean that this software is bad after all. The 0.-Version should say it clear: work-in-progress.
So that is why I gave 5 stars and not 3 (features): 5 for the concept as this is vital for our online privacy: Getting back the control of our data. So let us make sure that the developers got directed in the right direction. :)