http://www.youtube.com/watch?v=as_3Pp_yGq4 Digital currency Bitcoin is gaining popularity around the globe as people become more and more dissatisfied with the conventional banking system. Instant, safe and nearly anonymous, is what Bitcoin claims to be. It takes no commission for transactions and can be used internationally wherever you have internet access. Is it the currency of the future? We talk to Bitcoin developer from UK Amir Taaki.