Actually... I have concerns about how exactly international adoption really benefits these children.
For us as adults, it would be traumatic to learn that tomorrow we are moving to a third world country for the next eighteen years of our lives - yet, we have no problem with taking a child from a third world country, with parents who often know nothing about their birth country, culture, traditions or heritage.
What are you going to tell them when they ask "Where am I from"??? "Well, we bought you from this orphanage in that slum" doesn't really cut it somehow.
I think it would be kinder to the child to make it so that either at least one parent is from that country, was raised as the child of an emigrant from the country or both adoptive parents have to study the country and its traditions extensively so that they can choose to incorporate this into the child's life as they grow up.
It's not fair to drag children to first world countries or even have children born into mixed culture families and not teach them about who they are and where they're from.