Quite a few times. Oh... Did I say a few? Oh, sorry. Meant more than a few. :) I've been put through it all. XD I've had 6 or 7 years of it. There is one thing I got put through which I will never speak of again.
But for those who have on the internet, I just don't talk to them. For the ones in real life? The only eye contact we ever make is nasty looks. :) You don't want to know what some of them did. Oh god NO. x.x XD I usually don't do revenge unless you get me mad enough.