On the other hand - It isn't readily apparent to noob's what a KARMA is and so they may not therefore check it out. Or conversely, stumbling on a Karma message may be what turns them on to what an awesome group of fine, upstanding, polite and agreeable people we are.
Yeah no one takes me seriously. I know. Poor bastard breaking into my house last night thought I was joking when I said I'd shoot him. Know the crappy thing about it, having to clean the blood off the walls and floor!