[ And I always thought the charm quilts were called that because they used charm packs (5" precuts). Am I wrong?[/quote]
Yep... ;o) They made charm quilts long before charm packs were ever invented. Charm quilts go back as far as the 1800's or longer.
I always thought postage stamp quilts were made using 2" or smaller squares. Not sure if they have to be all different fabrics or not. I have an antique one I bought and will have to get it out and look at it. I think its got some squares alike.