Sorry you had the misfortune of encountering this sort of character in
one of your first games here at RHP. We have a fairly large
membership and so you are bound to come across a few individuals
who cannot adequately express themselves without resorting to foul
language.
I think you will find that the majority of folks you play against here are
just fine. But be warned that you may find a few more like him. You
will also find several who rarely communicate.
The main thing I'm saying is don't let one individual bias your opinion
of the RHP site.
I am not aware of any provision for monitoring messages between
players during a game.