the ones I have uploaded I've used generic stamps on them, and then one didn't have stamps, so I put "how I did it" in the description. I'm not one to frequent the gallery that much, but maybe those who aren't putting the stamps in there are using just plain ol' store bought generic stamps. (By that I mean those that aren't stampendous, stampabilities, and things like that, you know, the cutsie ones in the kids dpt, or a the dollar store, etc.)
I dunno, though, just an idea??