Cheap Zombie Christmas Card

Zombies are divided regarding spending money. Some zombies are quite generous but other ones are plain cheap. How do we differentiate a generous one from a cheap one?... easy, the cheap ones send Christmas e-cards (or  Holidays e-mails which is even worse).
Merry Christmas to all zombies in the world! (please re-send this e-card to your friends... its cheaper than mailing one).