Actually, what I think it is, is that these certificates become such a pain to use when you get to the shopping cart stage, they hope you just say, "Oh well, but since I've taken all this time and picked out all my fabric already, I'll just place the order...it's only $10." I really don't think it has anything to do with a c.c. # thing as the certificates come from different quilt shops that are participating with the shophop. But, it's frustrating for sure.