Most people think that once you purchase a GoPro you'll be making sick edits like all your bros of all the gnarly shit you do. Which is the case sometimes. But as YouTube user Monkeynuts1069 found out last summer, you should probably let someone else be the hero.
Hours after buying a GoPro headstrap he was bombing a hill and dislocated/fractured his ankle. What it left him with was 1 plate and 9 screws. Hopefully he's back on his feet.