If you are curious about cryptocurrency and would be interested in a bitcoin alternative, you should check out NeuCoin immediately. From a Parisian startup, the new currency is intended for small transactions, like tipping content creators or making micropayments online.
As a bitcoin alternative, NeuCoin addresses the issues some have with the bitcoin wallet and its complexity. This new cryptocurrency also kills banking fees and could be used to replace a credit card online, but for microtransactions where using a credit card could be too much.
NeuCoin has what TechCrunch calls a proof-of-stake design and economic model, which means to get more coins you don't already have to hold coins or have more computing capabilities. If its wallet is an easier user experience, it could definitely provide competition to bitcoin.