I guess this thread went quiet for a while, but, since we are slaughtering on Sunday, my mind keeps wandering back to this subject.
I definitely am not a big fan of salty food. And I'm quick to agree that a lot of brines out there are way too salty and result in a bird that is as much pickled as it is brined. But still, a good brine brings a lot of moisture into the bird, tenderizes it, and, if done correctly (I don't always do it correctly) doesn't make the bird too salty. That link I posted earlier to cook's illustrated really does a good job of stating the basics, the science, and how to do it.
It's always fun to experiment, trying to get it just right.