[artao]

Single online activation with a CD-key, perhaps with an occasional re-check but not even monthly. Like how Win XP (and later?) does it. It's irritated me a few times, like when I changed hardware too much, without 'net access, and had to phone them to get re-activated, but I was able to do so. Just about the only thing I WON'T put up with is being required to be constantly connected to play a single-player game. BOOOO!!!