Squalid boxes filled with sex ads are littered all over Las Vegas's street corners.

Sex ads printed on little cards are handed out by mostly Latinos and some blacks to tourist pedestrians on the main street after dark. If one accepts every card handed out on every block, one can collect up to 40 unique cards in a day.

A page from one of the sex mag.

http://xahlee.org/Periodic_dosage_di..._copulate.html