Say what you will friend but unless you are prepared to back up the felon claim with some form of proof, you have stepped way over the line. I suggest you either provide proof (which does not exist as I have never even been arrested and there are no warrants out for my arrest) or apologize. Naturally since you will fail, you will be shown to all here who the liar is but at least by apologizing you will reduce your liability to a cause of action.