In one form, this fantasy sex is accomplished by the participants describing their actions and responding to their chat partners in a mostly written form designed to stimulate their own sexual feelings and fantasies.

Cybersex provides various advantages: There is disagreement over whether cybersex is a form of infidelity.

While it does not involve physical contact, critics claim that the powerful emotions involved can cause marital stress, especially when cybersex culminates in an Internet romance.

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.

A good deal of cybersex takes place between partners who have just met online.

Cybersex can be utilised to write co-written original fiction and fanfiction by role-playing in third person, in forums or communities usually known by the name of 'A Shared Dream'.In "real cybering" personas often remain in character throughout the entire life of the contact, to include evolving into phone sex, and meatspace encounters while in character, as a form of improvisation, or, nearly, a performance art.Often these personas develop complex past histories for their characters to make the fantasy/roleplay even more life like, thus the evolution of the term "real cybering".Using similar sites, couples can also perform on camera for the enjoyment of others.Cybersex differs from phone sex in that it offers a greater degree of anonymity and allows participants to meet partners more easily.the increased popularity of webcams has raised the number of online partners using two-way video connections to "expose" themselves to each other online—giving the act of cybersex a more visual aspect.