From DBWiki
You must be of legal age to verify your identity on Bitmunk. Anybody that is under-age is not allowed to buy or sell files on Bitmunk without parental consent. This is mostly due to the way laws work in most countries, we require that you be recognized as an adult before being able to take on any financial or legal liability that may be connected with you using Bitmunk. It is purely a precautionary measure.