Craigslist has been working hard to fend off criticism that it facilitates prostitution by implementing numerous measures to help curb Erotic Services listings. In November of 2008, Craigslist came to an agreement with the National Center for Missing and Exploited Children (NCMEC) and the Attorneys General of more than 40 states to reduce prostitution on the site. In addition to a new phone verification system launched in March 2008, Craigslist began requiring credit card verification for each listing in the Erotic Services section. These two measures were meant to make posters more accountable for their listings, as Craigslist could blacklist phone numbers or credit cards that had posted “inappropriate” ads in the past. As a result, the company has apparently seen a 90 percent drop in Erotic Services listings, which, of course, was the goal.