Well the google toolbar (which has a popup blocker, and which I recommend to everyone) lets you choose which sites you will allow popups to be. So right now I have popups allowed on this site, but not on any others.
Yes, let's hear it for Google's toolbar. It's been my companion since they first came out with it. The popup blocker, which they added fairly recently, costs nothing, runs unobtrusively, and works like a champ.