Those are the sort of guys who do it to look cool, they aren't true longboarders. Thats debatable. What truly makes a 'true' longboarder? The most basic principle to longboards is transportation, which is why longboarding is popular on university campuses because of it's practicality. It's longboarding etiquette to be considerate of other people, and not to skate on the sidewalks/pavements if at all possible.