In fact, law enforcement agencies will tell you a different story. When DC Metropolitan Police Investigator Brian Bray was interviewed, he stated they have never received a call from Craigslist.
In addition, "In 2008, Craigslist agreed to report any suspicious ads to the Center for Missing and Exploited Children, which works with police to find and rescue trafficking victims. Two years and hundreds of thousands of sketchy ads later, the Center says Craigslist has reported fewer than 100." http://bit.ly/an8wIO
Furthermore, "'The craigslist brothel business seems booming -- belying its promise to fight prostitution,' [Connecticut Attorney General Richard] Blumenthal said after issuing the subpoena Monday. 'We are asking craigslist for specific answers about steps to screen and stop sex-for-money offers -- and whether the company is actually profiting from prostitution ads that it promised the states and public that it would try to block.'
"... All of the specific steps Craigslist pledged to take in its agreement with the Attorneys General have apparently proved ineffective. According to law enforcement, ads for prostitution are proliferating and are barely disguised on the site. 'The best evidence is thousands of ads that remain on craigslist -- skimpily and slickly disguised with code words,' said Blumenthal earlier this week." http://bit.ly/bENRU6
And, if Craigslist were truly interested in working with law enforcement, why did they file suit against South Carolina's Attorney General, "who is investigating the Internet company for carrying ads for prostitution?" http://bit.ly/9T4M5X