Ripple CEO Brad Garlinghouse is taking heat from Bitcoin belivers for compairing it to the early, and now forgotten music P2P sharing program "Napster".Speaking to Bloomberg in Singapore, Garlinghouse said:It's an interesting battle as Bitcoin faces criticism around issues of scaling - leaving some questioning Bitcoin's long-term usefulness as a currency, and Ripple faces criticism for lack of decentralization, one of Bitcoin's main components.