I fully expect new sites¹ to become invite-only to avoid this sort of thing. If anyone is strongly suspected of degrading the quality of the site, they, and eve

I fully expect new sites¹ to become invite-only to avoid this sort of thing. If anyone is strongly suspected of degrading the quality of the site, they, and everyone they invited, are banned, and will have to get a new invite. ¹ Old sites are probably going to slowly degrade permanently, since they can't easily migrate to a new paradigm.