Among online poker players, Tom Dwan is a 22-year-old superstar. Logging in under the username durrrr, he's managed to win millions of dollars by outplaying some of the game's most lauded pros. Considering Dwan's hourly return, his time is clearly valuable - for every minute that he's not playing poker, he is essentially losing money - and he's learned to be picky about parcelling it out. So much so that he once missed a vacation because a game online was so compelling. 'I played two people with tilt issues,' remembers Dwan, who stayed home and made $ 1.3m instead of joining his friends in Cancun.