Copyright liability related info for masto hosts: https://twitter.com/rahaeli/status/1593819064161665024
Boost, maybe?
summary:
"US folks running Mastodon instances: register with the copyright office and designate an agent to receive DMCA reports *right now*. copyright.gov/dmca-directory/
It's $6 a year. Use a forwarding phone # and a PO Box you check frequently, not your home address: it will be public. Without this registration, you WILL be held liable for any copyright violation on your instance."