Hundreds of thousands at least. Considering the amount of specialist stores online, how many are stocked at hospitals, doctor's offices as well as their availability at any store with a health and...
The sport's popularity has swelled and shrunk over the years. In 2006, U.S. skateboard sales were $76.1 million, a 2% decline from a year earlier, according to the National Sporting Goods Assn. (from...