As usual, fuck the assholes who are doing the bullying.
If it's people they actually know in real life doing the bullying, that sucks. They get enough of that shit at school where the teachers don't give a fuck and will never stop it.
But, if it's random people who post on forums and shit, these kids need to get over it. It's not hard to realize that faceless people who live to give people shit on forums are probably overweight and unemployed, and on top of that, probably didn't graduate high school in the first place.