Before I came to Japan I decided to write down the CD keys for my games into an encrypted file just in case I decided I wanted to play — namely for Starcraft and Diablo 2 — and then when I actually did get here a friend of mine and I decided to play some Starcraft for old time’s sake, but since I didn’t have the game CD with me, I simply downloaded the game online “illegally”, but used my own CD key to play. Risky and stupid, but from Blizz’s perspective, no loss really.
Just now, I went and created a Battle.Net account and started adding all my games to it. You can add any Blizz game you’ve bought simply by inputing the CD key for the game in question into a text box and the correct game will pop up and be permanently added to your BNet account. Not only, but you can now “download client” directly from the BNet site… so as in my case, I *wouldn’t* have had to bring my CD keys in a secure encrypted file, and I *wouldn’t* have had to illegally download the game from some torrent site, because all I’d need is already there, on my BNet account. Awesome move by Blizz there.
I also added my WoW accounts (note the pluralis — though in honesty, neither one of them is currently activated), which felt awesomely nice, because it is incredibly confusing to have two separate accounts for the same game. Now I just use my BNet creds to login to whichever it is I’m playing. Presuming I actually start playing again, some day.