I never used chat, but being a member of other online forums, I must agree with your decision. Too often people post things that are offensive and crude, and being that this site is "Back Yard Chickens", not "back yard over the fence personal info central", I think you are well within your rights to remove something not chicken or bird related. There are too many free chat rooms available elsewhere for anyone to get bent out of shape that they can't come on a chicken forum to gossip about non-chicken related life issues.
Kudos for taking a stand!