I feel like shared blocklists will become an emergent feature of this platform, as it inevitably will be used for planning violent/illegal activities and harass

I feel like shared blocklists will become an emergent feature of this platform, as it inevitably will be used for planning violent/illegal activities and harassment, and I feel that pubs and individuals would want a way to combat such things to promote more focused membership (for topic forums for example). There will be ident wars where blocked individuals will then create new idents which have to be identified and blocked and so on, and there is little other than not inviting people to prevent this. The basic infrastructure of forum moderation seems possible, but I think automated/subscribable block lists would become a standardized feature of clients.