Hey, look! It's Tom from "Tomstupidspace.com". He forced his friendship on me. And then never showed up at any of my parties! Arggh! Maybe I shouldn't have registered "Tomstupidspace.com". Maybe he should've asked permission first...
The thing is, Steem isn't yet an exact replacement for Facebook... just for blogging and posting. But it's more like twitter in how public it is.
I bet it's just a matter of time before someone builds a decentralized photo sharing application and encrypted private groups on Steem. Then again... that sounds complicated, and how will it get funded?