here's my exclude list that results in only the showflat lines being indexed:

page/1/fpart/1
ubb=newpost
ubb=markallread
ubb=mycookies
/ubb/newuser
/ubb/cfrm
/ubb/calendar
/ubb/search
/ubb/faq
/fpart/all/
/ubb/showprofile
/ubb/dosearch
/showflat/sticky/
/ubb/printthread
ubb=addfavuser
ubb=newreply
ubb=showprofile
ubb=sendprivate
ubbthreads.php/ubb/showthreaded
&Searchpage=

still a bazillion dupes.

why have a 'search engine friendly URLs" option when a spider can't even function accurately in there?