There is a great article in this month's Fast Company magazine about Pandora. The article talks about the history of the company and how the thing works. For one thing, I had no idea Pandora has been around for several years. Anyway, check it out if you are interested in learning more about Pandora. Also, I have to put a plug in for Fast Company. It's a great magazine for entrepreneurs and business people in general. It's how I discovered Seth Godin years ago and although Seth no longer writes for them (at least not regularly) they have plenty of other great writers that are worth reading.