Last year I pointed out a little Asian girl on a longboard to a friend and predicted a humorous outcome as she started to roll down a hill on my school's campus with her feet planted wider than her shoulders like she was trying to stay upright in a hurricane. She got to the bottom of the hill as classes let out and collided with a guy's shoulder, he didn't budge, she flew backwards. Skateboarding is illegal on campus now due to the land canoes.
Edit: I really don't have a problem with longboards being used for things that skateboards can't, like bombing mountain roads that go on for ten minutes.