Aether, released under the AGPL, is a distributed, censorship resistant, Free Speech platform which allows users to impeach moderators. Aether just had a major update and received some additional funding::
https://getaether.net/docs/faq/
Discussion on Aether is ephemeral, as in spoken conversations, the threads disappear (after 6 months).
A lot of valuable discussion takes place on Aether and it is being investigated how IPFS might be able to work with Aether to pin content that deserves archiving.
If you would like to help support Free Speech using IPFS, please take a look and consider letting your friends know.