> Sex workers didn't suddenly become less vulnerable simply because they're posting Craigslist ads. Actually, they did. With a red-light district you have to b

> Sex workers didn't suddenly become less vulnerable simply because they're posting Craigslist ads. Actually, they did. With a red-light district you have to be there, exposed to the pimps, to be exposed to the customers. And the density allows pimps to control more people, enough to make the activity profitable. With out-call services from ads you avoid the presence of the pimps in the first place, and the configuration (outcalls) makes capturing a sex-worker much harder if they try which makes the economics much less attractive. Pimping is a crime of opportunity and outcalls remove most of that. Also, not being street-people, call-girls get much more respect from police if they need to report a crime.