All we need if we want a free alternative to ANY social network is being back on nntp. Of course we can add features to it, we can start to shake heads and think seeing the role of IT today it it's time to buy serious mail solution, perhaps a VPS and a domain name, perhaps create a small home-server that mirror public/semipublic personal stuff from the VPS to us so we can easily jump from a vendor to another without change anything from our mail address to our datas.
IT is not only a game anymore, it start to be a serious thing even for casual people, better know a bit of it and be prepared.