The article did not say that 100,000 11 year olds are working the streets. It said of the estimated 100,000 9-19 year olds who are involved in sex trafficking the average age is 11. Sex trafficking is not limited to street prostitution. It includes involvement in pornography, escort services, phone sex lines and other activities.
I am pretty certain that that the internet is a great stalking ground for the sickos who prey on these victims.
Which is also odd, because in order for that to be true the distribution must be heavily skewed toward 9 and 10 year olds. And they wouldn't be the ones working as escorts or on phone sex lines.
I have no doubt these predators exist, and they should be killed slowly and painfully, but I'm not buying the article's numbers.