It's funny, but I always assume that I've got most of the publishers websites in my bookmarks, but I often go to look something up and find I don't. Here's a small list of publishers' addresses. More to come as I realize I don't have them!
Yeah, okay, they're the easy ones. Here's some more obscure ones:
Slave Labor Graphics
There, now click on each of those and bookmark them, and that way when you want to look for them you won't have to google them. Yeah, I know, it'll save you maybe a microsecond, but the web's a fast place.