I read on the wiki that the reward for solving a block is 50btc plus the transaction fees for the transactions contained within that block. Isn't it possible that these fees are much greater than 50btc? Who gets these fees in a mining pool? Do they get passed to the miners or does the pool owner keep them? Does anybody have stats on average transactions contained within a block or how much in transactions fees was paid out?

EDIT: Nevermind I just totally figured these questions out after looking at blockchain.info.