Proffitt,Merrilee, 07/04/20 21:22:
We acknowledge that WorldCat holdings aren't perfect, and that they certainly aren't a surefire way of indicating notability -- however, they may be helpful in guiding editors
They are certainly used in Italian Wikipedia discussions (a bit too much even, I'd say). That's one reason we were interested in importing a selection of authority files from SBN.
Federico