http://www.techcrunch.com/2009/10/17/beware-the-reverse-brain-drain-to-india-and-china/
This is something I am actually experienced in. Brain Drain occurs when a locale has a high skilled, educated population, but no jobs or opportunities, or social / cultural foundation to keep those workers from moving away to somewhere that has jobs, or a better lifestyle. With the US in a deep recession, Vivek explores the scenario where some Americans are heading to India and China because that’s where there is still high-tech employment to be had.