Cybersex is commonly performed in Internet chat rooms (such as IRC, talkers or web chats) and on instant messaging systems.
It can also be performed using webcams, voice chat systems like Skype, or online games and/or virtual worlds like Second Life.
It can also be used to gain experience for solo writers who want to write more realistic sex scenes, by exchanging ideas like sex position.
One approach to cybering is a simulation of "real" sex, when participants try to make the experience as close to real life as possible, with participants taking turns writing descriptive, sexually explicit passages.
In situations like this, the people typing often consider themselves separate entities from the "people" engaging in the sexual acts, much as the author of a novel often does not completely identify with his or her characters.