I make up fake screen names and profiles on Yahoo!. I'll make up a stupid name like cindysweetone. I then go to one of those online dating sites and take a picture of a reasonably attractive woman and put it in my "profile".
One time this guy sent me an invitation to view his webcam. I watched him masturbate while I sent dirty messages to him. He told me he was using his wifes account. I put him on my buddy list under a different fake screen name.
His wife came online the next day and I told her all about our little cyber session. She didn't believe me untill I described the painting in the back ground, and what her husband looked like. Sucks for him.
Or sometimes I'll cyber with a guy, and when he cums I'll tell him that I'm really a guy. Man do they get pissed! I know it's wrong, but I get this sick satisfaction from it.