Sloan Management Review Summer 2009 edition had an article about it, I cannot find it online for free though. Their url is http://sloanreview.mit.edu/the-magazine/articles/2009/summer...

If you are a student, use your university's network to access it through something like Business Source Elite or walk to the library and read the actual journal, it's a good read anyway! You can also ask someone with access to these resources to download the pdf for you.