Well yes there can be dupes but Google actually did not list many in the first few pages. This is not a scientific method of locating UBB Sites, just a small idea of gathering some. Didn't realize just how many there are and that doesn't include all the other BBS types that are not UBB
As an example if you do this search it will be like about 790,000 links but only 3 pages as Google suppresses the dupes.
intitle:ubbthreads
