Gangnam Style is a poignant example of a world-wide entertainment trend that wasn't started in America. Most of the world doesn't even know what the lyrics mean, but that didn't keep it from sweeping the globe. It did so without advertising or great expense, using Internet platforms like Youtube to get reach.

I've seen Gangnam Style covered in places like the New Yorker, the Economist, and the Wall Street Journal. These are places that don't generally spend time discussing pop music, but that also felt Gangnam was worth consideration.

Musical tastes vary, and nothing says you have to like it. But PSY's hit seems to be indicative of a global increase in cosmopolitanism, and that's a trend that affects many entrepreneurs and investors.