The BBC reports that accounts in the popular game Half-Life 2 have been cancelled by the manufacturer. The developers were able to require authentication for the online part of the game, and have been able to shut them down.
I am not sure why they are so enthusiastic about it. I remember that authentication of multiplayer accounts was common as far back as Starcraft. Besides, it is evident that there will be a crack soon. Soon did I say? What about right now?