[Giveaway] Free MOO stickers for 250 fast-clicking readers! Rob Beschizza 6:12 am Fri, Jul 1, 2011 Hit MOO cards with the promo code BOINGSTICK get a free pack of its new stickers, rectangular labels, or stickerbooks. You’ll need a pic to upload and a fast trigger-finger: only the first 250 people to use the code get ’em free of charge.