our investigation helped spark a national conversation and outrage. >> attorneys general from all across the nation sent this letter out to craigslist. they are calling on craigslist to completely shut down the adult services sections. >> just weeks later. >> over the weekend, craigslist shut down its adult services section slapping a censored label in its place on its website. >> but when craigslist shut down the adults services section, the pimps and johns migrated to the next most popular site, backpage.com, where you can buy a car, a used couch or an underaged girl for sex. they charge $5 per escort ad and according to the internet research firm, the aim group backpage.com's monthly earnings jumped by more than $1 million after craigslist took the adult services section down. backpage is projected to earn more than $20 million from their adult ads alone in 2010.