Yesterday, The main #Mastodon instance (mastodon.social and mastodon.online) rolled out a new Terms of Service with lots of controversial changes, including forced arbitration, IP rights detainment, and other instances would be forced to follow these terms. More info here:
https://mastodon.social/@mcc/114710875472699375
https://mastodon.social/@mcc/114711051086621731
Thankfully, they're backing off while they review and hopefully get some good legal advice (home they take on the EFF's offer on that).