Read about more ways of making money in virtual worlds at Forbes.
Otherwise, the term is quite broad and can include relationships based upon text, video, audio, or even virtual character.
For example, “Khannea” took her first client on her very first day in Second Life, and since then has been busy working many days per week, several hours per day.
She dresses her avatar in provocative clothing, and simulates sexual activity using a variety of animated actions and pre-recorded sounds.
“Kira was everything I should have been,” says Kristen, who has a 12-year-old son. My real life was diabolical and I wanted an escape.
In Second Life I could be who I wanted to be, and when I met Nik I was in control for the first time in years.