If you sign up with them, they'll send you a box of random nerd, geek, and gamer stuff each month, for a monthly fee. It seems pretty cool. I found out about it from Tobuscus in one of his vlogs. He got zombie jerky, a Diablo 3 shirt, 8-bit sunglasses, a love potion drink, a couple of zombie button pins, dog tags, and plastic vampire teeth.
You can get a discount if you sign up at lootcrate.com/audience and use the coupon code Tobuscus.