A possibility Gizmo, although Google doesn't seem to have nearly the depth of our site that I'd like to see.
My other concern is Google sprinkles the results with their AdSense ads. I'm not anxious to give our visitors too many avenues out of the site.
I use Omniture/VisualSciences for the rest of Piano World (the other 1000+ non-forum pages), but to ramp their service up to handle the forums would be big $$
