Content Filter In Chat Options

[Studenterhue]

Potentially, you could just have it user controlled.

Just let a player highlight parts they don't like, and add it to their personal filter

This, pretty much. Dunno how it'd be coded either (maybe it'd be use the code for highlighting certain strings, but with black highlighting instead?), but having it player-imposed would neatly sidestep all the touchy censorship issues and the personal and societal differences in what's icky enough to restrict.