Does anyone really think it wouldn't have happened without Facebook? That it hasn't been happening for thousands of years?
It's not like the invention of Facebook created this.
This is also the epitome of "think of the Children". I realize that in our culture auctioning off children is not acceptable, but who's to say we know what's right? maybe we're OK auctioning off rabbits or religious artifacts but another culture would find that horrific. So should we just say that whatever we deem OK is fine?