IAdvertising is incredibly expensive, so much so that only big companies can afford to do it
Why pay for advertising when you can get your game on slashdot and watch the hits come rolling in? He's certainly going to get some sales out of it which is not bad for a game that's a couple of years old and arguably vastly overpriced.
"This generation may be the one that will face Armageddon." -- Ronald Reagan, "People" magazine, December 26, 1985