Dave Winer is launching WordLand:
The goal is to bootstrap something new – a social network without all the problems of Twitter et al. Ultimately the limits they impose on writers are unacceptable. I’ve waited for them to fix these problems for 18 years now, and I’ve come to see, amazingly, they don’t see them as problems.
One way to think about WordLand is that it’s a posting front-end to WordPress, with its own RSS feeds outside of WordPress. The feeds have both HTML and Markdown. So you could build platforms (like Micro.blog!) that aggregate user feeds.