Really, asking "what should replace Facebook" is putting things the wrong way around.
A more interesting way to ask the question is, "what did Facebook replace."
People used to build their own websites. People used to have blogs. People used USENET which was truly distributed and un-censorable.
Facebook and Google took the open internet and open standards and monetized and made everything crappy. Enough of that. Nothing should replace Facebook, it's done, stick a fork in it.
@USBloveDog @hhardy01 for my personal use, a feature. It's useful to have flawless, asynchronous group conversations, or the ability to search messaging history from any device. The issue, as always, is that it's also incredibly useful to those I don't want it to be useful to.
@USBloveDog @Hascobe
As a sysadmin I know everything gets logged, question is who can see it.