Hogs, crouch rockets, scooters and cruisers all refer to different types of motorcycles. Faster and lighter than their four wheeled counterparts, motorcycles are a more fuel friendly alternative to the average passenger car because they are lighter. But the same lightness that makes motorcycles fuel efficient makes them more dangerous to drive: motorcycles average 28 times more fatalities per vehicle than passenger cars. This list contains some of the top sites for purchasing, maintaining and learning about motorcycles. Please add any relevant sites about motorcycles to this list at the bottom left.