You’ve probably by now heard about Bitcoin, the peer-to-peer digital currency based on Satoshi Nakamoto’s infamous self-published essay, that is either a giant scam, a genius and innovative new frontier, or nothing new – depending on whom you ask. For those unfamiliar, TechCrunch contributor Jon Evans best described it succinctly thus: “Bitcoin is an anonymous online currency whose transactions and monetary supply are verified by digital cryptography and maintained by an open-source peer-to-peer network”. The digital currency has evolved in fits and starts, like any early currency and exchange, and last month we covered the much-discussed collapse of Mt. Gox, the network’s most popular exchange. Tumult everywhere you turn. Based on the vulnerability of Mt. Gox and other Bitcoin exchanges, Chad Pankewitz and team have founded a new exchange, called Ruxum, that is dedicated to bringing a more secure alternative for Bitcoin (and Namecoin) traders. Simply put, Ruxum makes it easy to buy, sell, and trade Bitcoin and virtual currency. And for now it’s free. (Invites herein.)