I just noticed something which may mean nothing, but thought it worth mentioning. When I look at whose online here (and my site) and I highlight the link it says the Googlebot is crawling, it shows a link of the non-spider-friendly style like this: www.ubbcentral.com/forums/ubbthreads.php?ubb= etc., rather than www.ubbcentral/forums/ubbthreads.php/ubb/showflat/...etc.