I saw the tv ad by UNICEF on this a few days ago and thought... yes, it's such a harsh reality that so many innocent children are shoved into this kind of life. First World or Third World country, the problem exists, maybe more so for the latter where poverty is more prevalent. The fact that UNICEF is involved in the fight against child pornography and prostitution is in itself indicative of how deep-rooted the problem is.
Though I know the root cause of such things may be poverty, the problem also exists because of people who encourage such a trade with their "preferences," and people who can be so heartless and inhuman as to thrive and profit from it.
Please take time to visit the website and light a candle for these children.