Cybersex comes in many different forms, all of which are computer-mediated tools to become aroused.
In some ways, this form of cybersex is the same as reading erotica, except two people take part in it. It's also similar to phone sex, except it's more anonymous because you can't hear another person's voice or heavy breathing. Like other forms of erotic stimulation, all you know about the person you're cybering with is whatever he chooses to tell you. And since the whole thing is about fantasy, you can tell each other absolutely anything. There's something amazingly hot about knowing I'm turning somebody on so much that they have an orgasm.