>> we've run into a lot of victims and a lot of advocates that pretty much call your site the walmart of child sex trafficking. 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. thank you for your type, craig. >> obviously, we've reached out to craigslist to hear what they have to say. they haven't come on yet but we're hoping they will in the near future. just ahead, la barbi is behind bars and mexican authorities call it a victory against the cartels. we will have the latest on a former texas football star accused of some terrible crimes. first, 31 days trapped a half mile below ground, our carl p penhall reports on what lies ahead.