Moved on Nostr: Nostr doesn’t have captchas or any barrier to entry like that, so there’s a spam ...

Nostr doesn’t have captchas or any barrier to entry like that, so there’s a spam problem. This is a client-side way of stopping most of it from getting through to your screen. If an account doesn’t have “x” number of followers from your network (people you follow) it won’t show up in your timelines.

This is something another client did early this year and it worked very well.