This is a good article discouraging people's adopting Haitian kids. Basically it argues that many children in Haitian orphanages are not in fact orphans but kids whose desperate parents are offering them for adoption in order to save them from poverty. Adopting such kids ends up being a big mess and a heartbreak for everyone involved.
I appreciate reading about the difficulties that can pop up when you adopt kids in poor countries. My wife and I are considering adopting our next kids, and surely in our country riven by civil war and grinding poverty, the same problems detailed in the Haiti article are real possibilities.