WWW's inability to sustain things that folks post (in particular pics, vids, and audio) brings much frustration. IA and its Wayback tool do much good but can only go so far.
Mastodon is a "FOSS" social sharing hub. A multi-host substitution for capitalistic platforms, it avoids risking a particular company monopolizing your communication. Pick a host that you trust — you can still talk with all hosts running Mastadon. Any individual can run a Mastodon instantiation and join in this social hub in a jiffy.