Flaming is an intense argument, that normally takes place in chat rooms, over instant messages or email.

These bullies use capital letters, images and symbols to add emotion to their argument.

This is a real life example from People magazine: "I was instant messaging my best friend, and we had an argument over a guy…The next day she printed the conversation and handed it to a group of girls, but she'd changed it. It read like I had said all these really mean things [about them all] that I never said, and they believed her."
Look how the results of that flame worked out. Never send a reply to a bully whilst you are angry. Wait a period of time, to cool down, before you reply, if you even have to reply at all.