Cute and odd-sized cards are fun - but watch these when you go to use them....if they are to be mailed, make sure the post office will accept them (they have certain specs for small cards, etc.) Any "odd" card, like a square card, automatically costs more to send, even if it's within the weight restrictions.
I, too, love these unusual cards and still send them - just wanted others to know that there are added costs for the novelty!
P.S. I saw some great triangle shaped cards that really tickled my fancy -
anyone tried these?