To Matt's original question I'd like to share an experience describing the usefullness of ratings:
During my move from NJ to Houston a couple of years ago, I decided to drive and hit the best public courses I could find and coordinate arriving in a reasonable time relative to our stuff on the moving truck (the Mrs. flew down).
So prior to finding this great site or knowing any better I ranked my possible courses using primarily Golf Mags top you can play, and Digest's best of state (LA) for one stop.
Here is what I wound up with:
Pine Barrens - NJ
Royal New Kent - VA
Stonehouse - VA
Pinehurst #2 (twice), #4, #7, #6 - NC
Kiawah Ocean - SC
TPC Sawgrass - FL
Cambrian Ridge (Jones Trail) - AL
Bluffs on Thompson Creek - LA
Houstonian - TX
Needless to say I could do a little better today, but in retrospect it still makes for an extremely enjoyable and educational trip.
Hint - it wasn't the most direct route.
Aside from being something to argue about, ratings do have some usefulness. At least it creates a baseline of possible courses to see, then you just come on here and ask which courses are "better".
mike