Good question that I'd like to know the answer to as well--I didn't think PM merit-beggars were receiving any kind of ban. 

I have a custom trust list and thus have to ask you this, SFR10:  are you on DT?  I see you got trust from some DT members but I don't know if you're on the DT list.  If so, your neg on this guy will be almost as good as a ban anyway.  If not, hopefully a DT member will see this and tag the guy.