Ƀitcoin is an open-source, peer-to-peer currency. Peer-to-peer means that no central authority issues new money or tracks transactions. These tasks are managed collectively by the network.
The truly decentralized nature of makes it perfect for an international audience;
it is extremely low-cost and has real value.
We don't particularly hate credit card companies, we just agree that charging you for using your money is an old and bad idea.
Zero-cost transactions makes running frequent tiny (monetary and otherwise) tournaments viable.
We don't have to worry about currency conversions - it saves us time and money.
Managing the currency costs (almost) nothing.
It allows us to earn real money which we can use to continue our eSports Research and Development.
Wider usage of the currency strengthens it.
Although not officially supported by Google (as in they do not accept payment in BTC yet), we are seeing some movement towards support for the currency, at least on the (20% free time) development side.