I'm not doubting your numbers, ID. I've never really considered it before and the 6-800,000 figures really surprised me. But when you think about it, based on an estimated 6.7 billion current population, that's only 0.01%. Of course, with this kind of crime, even 1 person is too many.
And someone pointed out to me today that there are some cultures in which children are actually sold into slavery by their own families. In this country that seems absolutely incomprehensible. Yet even here we are beginning to see evidence of parents prostituting their children to sexual predators, advertising on the web and in "trade papers." It's one of those things most people would like to ignore, sweep under the carpet, push back into the shadows where it's has been for all these years. But the cat's out of the bag and these things ARE being exposed to public scrutiny, finally. Hopefully we will be able to do something about it and learn to help those people whose lives have become so full of misery.