An In-call service is a sexual service provided by a call girl or escort who is a sex worker, who (unlike a street walker) is not visible to the general public; nor does she usually work in an institution like a brothel, although she may be employed by an escort agency. The client must make an appointment, usually by calling a telephone number. Call girls often advertise their services in small ads in magazines and via the Internet, although an intermediary advertiser, such as an escort agency, may be involved in promoting more upmarket escorts, while some may be handled by a pimp. Call girls may work either incall, where the client comes to them, or outcall, where they go to the client. Most call girl agencies and independent call girls have their own websites. The internet has become the main medium through which customers find their desired escort. Generally, a picture of the girl is provided, and sometimes, the type of sexual services she is willing to offer. Some agencies also propose a higher fee for people of special interest, such as twins, former porn stars, B-List models, prodommes or even submissives. The Internet includes many directories or listings of call girls or escorts. These may cover a specific area or a wider region (even worldwide). Usually the call girl or the agency is responsible for submitting their information to the appropriate directory. Websites are also used by clients/hobbyists to provide a review of the call girls they have met and rate them, on their aesthetics, behavior or sexual performances. For the readers of evaluation web sites the rating of the call girls is often a determining factor in their selection. Escort Lounge categorises In-call.