@syx I use the webring a lot as a jumping point to get stuff off websites I've visited, so I tend to notice when things go down and reach out to the maintainers.
As for the content, the webring has a search engine(https://lieu.cblgh.org/), which it only ever happened once when I noticed someone sharing really nast content and I hate to kick them off, but usually it's not much fussing.
@neauoire the search engine is very neat! :O
I also maintain a list but I run a selenium script that looks for major front end differences every two weeks or so…