There's an old school website I wanted to access that's long gone. It's only partially preserved in the Wayback Machine. I'm glad it's there at all, but some of the specific information I was looking for was never captured, and now there's no way to recover it.
I realize it's a hard problem, but I really wish there were a way to automate more of it. Some of these communities are too small for anyone to bother preserving the pages manually, and I don't imagine we'd even show up on ArchiveTeam's radar. But they're not large pages, and basically static. I don't think they'd be a huge burden to store and maintain. It seems like some sort of a coverage + size metric would be pretty effective at guiding an automated scan such that you'd be able to preserve things liked this without needing humans to go and manually archive each and every page.