brian bray with the d.c. metropolitan police department, also in charge of the prostitution enforcement unit. craigslist blog they say they'll immediately contact law enforcement any time they see a suspicious ad. you say you've never been contacted by them? >> that's correct. it does bother us from a law enforcement perspective, because the problem is so rampant that, you know, to get a handle on it, we need all the assistance we can get. if they're notifying -- i'm not sure if they're notifying the right people because we're not getting the call. >> reporter: what are you doing to protect these girls? you guys say in the blog that you will remove any ad that looks like the person might be suggesting they're going to offer sex. look at this ad. it says young, sexy, sweet and bubbly. clearly she writes $250 an hour. what do you think she's selling in her underwear, a dinner date? she's in her bra and underwear.