Seems like it wouldn't be too hard to whip up an extension (or just a greasemonkey script) to append "-site:blah.com" entries to all google searches, according

Seems like it wouldn't be too hard to whip up an extension (or just a greasemonkey script) to append "-site:blah.com" entries to all google searches, according to a user defined list. In fact, I'd be surprised if such an extension didn't already exist (I'm not interested enough to go look...)