Basically configurable filter that silently drops chat messages that contain certain text.
- LFG and/or LFM — if I'm looking for group myself, but don't want to create one.
- WTS/WTB — although people do not always use them.
- Guild announcements — obvious. Since we now can link guilds in chat, they can be used by filter (I guess).
I know pChat has something of a kind, but it is not really configurable, and for some reason it doesn't really work for me.