Camgirls will frequently read and respond to the scrolling viewer comments.

However this is not the first time that conversational interaction had become a boon for the erotic entertainment industry.

The Mitchell Brothers O'Farrell Theatre strip club is credited with the invention of the lap dance when during 1977 their new stage, New York Live, pioneered customer-contact shows with strippers that came off the stage and sat in the laps of customers for tips.

Enabled with this new revenue stream for strippers, the strip club industry went through a period of extreme growth during the 1980s.

However in free chat rooms payment is voluntary and is in the form of tips, thus providing the model with an income at a minimal cost for the multiple viewers of her chat room's video stream.

Tips are electronic tokens that viewers can buy from a camming website, and then give to the models during live performances.

The tokens can also be used to buy videos or souvenirs of the model.

The websites provide the transactional platform, and then collects and distributes a percentage of the tips to the models.

Additionally, the pornographic film industry used to be male-dominated except for the performers.

But since camming only requires a video camera, broadband service, and computer, there has now been a power reversal and it is the female webcam performers who propel the industry while at home.

For public chat rooms, the model's portion of a tip is a little less than half.

Within public chat rooms the audience can see tips and viewer comments as scrolling text which appears next to the real-time video stream.

It’s a community and entertainment that goes very far beyond sexuality." However Dr.