According to anti-trafficking advocates, some of the women featured on the site are underage and are being forced into prostitution against their will.

When CNN reporter Amber Lyon confronted Craigslist founder Craig Newmark with these accusations in an unplanned interview, the Internet magnate said his company was doing "more than anyone" to combat prostitution ads, before falling silent and eventually walking away from her questions.You can watch a clip of the interview here: