I check all of the addresses personally before signing anyone on and if there is anything odd in your file or profile, I do not put you on the list. I have a responsibility to the other participants as listowner and from watching other lists, I have noted that a serious trouble maker will know when they are about to be deleted and send as much harassing and disturbing material as possible. Our list offers services like case study training for medical professionals and connects many hospital centers and government agencies . These valuable services must not be disturbed. It is hard work but the results are a fairly consistent and polite standard of communication. Best regards, Paul. -- Dr. Paul S. di Virgilio, University of Toronto [log in to unmask]