Ars Technica - Games for Windows Live is a broken mess and I hate it.
Microsoft wants to be a part of my living room, and they are. But if the company also wants to butt into my PC gaming and require this login, it needs to find a way to allow me to use my account on different devices at the same time. Heck, if you spend the money on two Xbox 360 systems, you can't use the same account on both; you have to move it with a USB stick or recover the account whenever you move between systems. I understand that if you want to play on both systems online at the same time, Microsoft wants you to have two accounts, but if I want to have two systems in different rooms they don't want me to switch back and forth in a convenient fashion? Really lame.