Miners get bitcoins two ways: 1) A reward (currently 25 BTC, cut in half at regular intervals) 2) Transaction fees: a percentage of each transaction in the bl

Miners get bitcoins two ways: 1) A reward (currently 25 BTC, cut in half at regular intervals) 2) Transaction fees: a percentage of each transaction in the block, typically with a 0.01BTC minimum currently. Once the rewards are gone, miners will be competing over who can include the most transactions in their blocks in order to capture most of the fees.