Should this be in the debate?
If you ask me the definition of a bully is diffrent for every person.
It depends on your personality and what effects you.
Physical bullying is worse then anything thats always true.
But mental attacks can cause severe damage possibly leading to depression and in extreme cases even suicide.
As for online like on a form if your new its not a big deal because you can just leave, like fuck it.
But if you've been on it for awhile, you have allot of friends, they know allot about you, how to hurt you etc... Then being ganged up on and attacked can be hurtful if your emotional, like I said it all really depends on the personality traits