In your case you need to give more power to users to block people categorically and add reasons, and share their blocklists with their friends. Anyone on a blo

In your case you need to give more power to users to block people categorically and add reasons, and share their blocklists with their friends. Anyone on a blocklist can be ignored or they can have a big warning placed next to them about what's wrong with them according to your friend. That is what local communities already do. If Facebook will never include that functionality, then fine, but it is possible. Also, if you are a liar (unwittingly or not), you should be directed to other liars just like yourself.