[How to get rid of morons for good?]

In Second Life anyway, I find the mute button an extremely helpful tool.  I also have a private piece of land that I can ban anyone from should I choose to.  A refuge if you may.  I know this is not always an option, but I would change who you talk to, and where you spend your time.  Ignore them as well.  They seek attention, and like a 2 year old thowing a temper tantrum, if you ignore them, they should stop.  Just some hopeful suggestions.