I think your thread to be overkill, just complain to the mods, have the offending posts and or keywords removed and be done.
I believe this to be a systematic problem worthy of a thread.
I don't agree. Things like this have a way of escalating gradually as people become desensitized to them. Like profanity in everyday speech. As its shock value and effectiveness diminish the impulse is to resort to it even more.
I think a thread like this is needed to reemphasize common courtesy and thoughtful dialog.