Or I can just buy it on the PC to start with, and get added benefits like saving $15 ($10 cheaper to start, plus an extra $5 off for pre-purchasing), a free copy of Portal 1 (another pre-purcahse bonus), the ability to use a mouse and keyboard instead of a Dualshock 3, not being tied to PSN while I play, very low risk of being sued by Valve because I did something they didn't like, and not being told I have no self respect by Gabe Newell because I use a competitor's product as well.
Valve, I love you guys, but you could add a real-life working Portal gun to the PS3 version, and I'd still just buy the game for PC. Fuck Sony.