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.
There are a number of popular, commercial webcam websites that allow people to openly masturbate on camera while others watch them.
It can also be performed using webcams, voice chat systems like Skype, or online games and/or virtual worlds like Second Life.
The exact definition of cybersex—specifically, whether real-life masturbation must be taking place for the online sex act to count as cybersex—is up for debate.
Amongst "serious" roleplayers, cybering may occur as part of a larger plot–the characters involved may be lovers or spouses.
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.