Some children end up in the sex trade - the docco actually showed footage of a client selecting a girl from a row of young women.
Some end up in families, particularly families who want a boy for traditional reasons, since in traditional Chinese culture daughters-in-law are to look after her parents-in-law (not her own parents) and the ever important ancestral line goes via males. And given the massive ageing population in China and the lack of sufficient care for the aged, I can understand why some people choose to buy babies as a back-up plan for their future aged care.
BBC NEWS | Asia-Pacific | Ageing 'threatens China economy' Sadly, where there's demand, there's supply - whatever the cost.
You can view the docco on:
China Digital Times » Video: China’s Stolen Children