lemm.ee has shut down at 00:14 UTC.
unfortunately I realized too late that I have had hundreds of saved links to posts and comments from there, so I did not have enough time to save them, but anyways it is interesting that maybe a third of the post links I could try were dead. I think linkrot is happening much faster here than on reddit, even if just counting deleted posts.
At the very least, social networks like this really need a two server type system: the authenticator who identifies that you are really who you say you are and handles personal settings, communication, and access to the fediverse, and the content provider that hosts the communities.
How do you ban users in this scenario?