I don't think you need to block the ultimatebb.cgi pages
Each topic has an anchor at the top of each post - not sure how particular about this but for each topic you're going to have links to each post within to basically the same info.
Example: Above link:
http://ambergriscaye.com/forum/ubbthreads.php/ubb/showflat/Number/213933/page/0/fpart/141Also has these within the first 3 posts:
http://ambergriscaye.com/forum/ubbthreads.php/ubb/showflat/Number/213933/page/0/fpart/141#Post179317http://ambergriscaye.com/forum/ubbthreads.php/ubb/showflat/Number/213933/page/0/fpart/141#Post179318http://ambergriscaye.com/forum/ubbthreads.php/ubb/showflat/Number/213933/page/0/fpart/141#Post179319You could remove those anchors, but it would have the side effect of breaking the 'jump to newest unread post' feature.
Why would you not want to get postlist indexed? Would seem to be a lot of good info for search engines.
