Buy this, and become awesome
This is my second GoPro, and a mighty upgrade from my Hero 2. If you buy this camera, you WILL become amazing at all extreme sports, having insane looking parties, meeting super attractive people and being in fantastic shape.
It's an investment really, how else would you be able to capture yourself doing a backflip out of a plane at 60fps? Nobody on Facebook would be able to see your amazing diving with sharks.
Personally, my pictures and videos are incredibly boring, but they look much more awesome in HD...