GameSpot - The DRM Dilemma Part Two. Thanks Ant.
Carmel’s decision to leave out any form of DRM or copy protection from World of Goo came down to a number of factors, including expense and the inevitability that all games will get cracked, no matter what. “Pirates can always get around DRM, and you end up treating your legitimate customers like pirates [if you use DRM]. Not using DRM creates good will towards the developer. For us [2D Boy] there are no benefits to DRM. Someone once told me that they get a sense of ownership when they enter their licence key, but from everything I heard I think this person is a rarity," he said.

Gamasutra - The PC As Champion of the Game Revolution. Thanks Mike Martinez.
Let's face it. On the PC, there are no hoops to jump through, no 'i's to dot and 't's to cross, and no one else to give your money to. The PC is where the revolution has started, and it's going to continue to be where it happens. They say PC gaming is dying, but really, it's just evolving into something that can't be tracked or controlled.