British prostitutes have been comparing notes on clients, and getting advice on pricing, in an online forum.
The site sees escorts warn about dangerous men - with sex workers recounting horrific ordeals, including being robbed, attacked and threatened.
They also open up about clients who refuse to pay and raise awareness of stalkers and men who remove condoms during encounters.
In one horrifying post this month, an anonymous user posted on the site, called Support and Advice for Escorts (Saafe), about being chased by two men in what she suspected was a turf battle.
After being driven off the road in a terrifying-sounding car chase, the escort wrote: "The cowards drove off before we could get a licence plate and left me and my driver for dead.