Uniting with others doesn’t just help defuse bullying in the real world; it can do wonders online too. If you see someone being targeted by a lot of people online or you know someone at the center of a widespread rumor, lead the charge in uniting others to help that person out. You can get your friends to post positive comments on that person’s wall or you may consider encouraging a group of people to change their Facebook profile pictures to show solidarity. Use your judgment to discern what would be appropriate. If those ideas don’t work, you can always organize your friends to send private messages of support.