>The resulting click statistics would then keep pushing it up and up, right?
Right. Remember some of the 'Hey, I just went up a few slots' threads back in March here and elsewhere? Some of us noticed that we were advancing with every re-indexing. I can't speak for others, but I wasn't doing anything to the site nor did I notice anything different about the competitors in the top 20 (pretty much the same group of us for 3 years now).