Craigslist, now backpage. If one is shut down who knows what site will next help facilitate human trafficking and sexual slavery.
Websites like backpage helps this business to flourish in plain site but the issue at hand is much deeper and complex than a website.
Where there is a demand, the business men in the field will always find a way to get advertisements for lucrative services to the public. The fact that they are exploiting human beings means little.
As a society we need to make purchasing sex from underage/coerced/forced individuals culturally unacceptable and let all parties involved know this clearly.
Laws need to be enforced harshly on the suppliers and the buyers. Legal prosecution costs needs to outweigh the monetary and personal benefits of those exploiting others. Consistent and reliable forces are vital
Maybe then we will see a reduction in the violation of basic human rights of individuals for perverted personal gratification.