I've heard a couple of mentions of Mastodon recently, including this post by @katharsisdrill. It's a sort of Twitter clone that can be federated across many servers.
It sounds something like identi.ca, which was a place full of geeks a few years back, but has changed into something else now. I used it for a while having been a Twitter user. I'm still on Twitter, but don't use it much. There just isn't time to be active on lots of social sites. My time is mostly split between Steemit, G+ and Facebook these days.
I have created a Mastodon account just to try it out. I can't promise I'll be active there.
Mine cryptocurrency in the cloud at Eobot, including Steem. You can earn as you chat using WowApp. If you use these links I get a small reward. You can recruit others to do the same.