Liberapay is in trouble, here's our blog post that explains the situation and what you should do if you're one of our 2000 active users: https://medium.com/liberapay-blog/liberapay-is-in-trouble-b58b40714d82
Invite-only Mastodon server run by the main developers of the project 
It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!