Yeah, just stop going online, it's so simple! I know almost your entire social life is online, and the identities we create online are increasingly hard-linked to our real life identities, but all you have to do is exclude yourself from everything that you enjoy doing online and you'll be fine!
There's lots to do online that doesn't require a hard link to real life, and everything that does require a hard link should be looked at with the most rigorous of scrutiny and suspicion.
I never had one, I mean I didn't have too many friends and wasn't very popular. I cannot say for sure how cyber-bullying affects people, well because maybe I just missed the era where elementary/highschool kids really engaged on the net.
I think I have spent more time on the Internet that anyone in a square mile, maybe more. But I opened a facebook account and I don't even have a profile picture. I never really found it interesting, because people are super boring.