http://steve-yegge.blogspot.com/2008/04/settling-osx-focus-follows-mouse-debate.html
So, I've been playing with Mac OSX enough to really seriously hate it for it's horrible UI design. I've blogged about this in the past. I've told people how broken it is, and now I use the thing at least a few times per week. I thought the above posted blog URL hit it right on the money. That guy did a lot of research so I didn't have to :)
