The article suggests social media itself can be used to fight cyberbullying:
The other study, led by Saleem Alhabash in the Department of Advertising and Public Relations, suggests positive online comments are an effective way to fight cyberbullying.
MSU's description of that research:
A recently published study by a team of Michigan State University researchers found that one effective way of fighting cyberbullying is by using the medium where it tends to flourish. The key, said the researchers: Make your anti-cyberbullying messages positive in nature.
“In order to get people excited [...] positive messages will work better because positive stimuli lets us be more approaching,” said Saleem Alhabash [...]. “Being more approaching means we are more open to persuasion.” [...]