Great post. I think Steemit, as of right now, has the most promise of being a replacement for Facebook. Minds is the most user-friendly IMO, but it doesn't seem to have the incentive like Steemit does, so it's not that much of a puller of people out of the FB arena right now. Since Steemit is still in beta from what I understand, they're still working out how to best optimize the social network for ease of use. A few things to figure out I think are the password issue (if you lose it, you're locked out of your account forever), the content-creation focus, and the number of bots. All in all, I see tremendous opportunity for Steemit and look forward to seeing its rollout continue.