I don't really think BitCoin will be made illegal, simply because there's no real reason to do so. As a concept, I find it interesting; however, I consider the

I don't really think BitCoin will be made illegal, simply because there's no real reason to do so. As a concept, I find it interesting; however, I consider the execution to be flawed in several ways (namely the entire concept of mining). In order to become a force which could get attention, BitCoins would need to be used en masse for nefarious or questionable purposes (the definition of those being whatever politicians decide they are). Right now the volume is extremely low and quite frankly you're not going to conduct large scale illicit activities in that system easily. If it hits $50bn in volume however, then something might happen.