Why give someone an ordinary old paper business card when you can give them a beef jerky one? Sure most people won't want to hold beef jerky in their wallet and even fewer people will find it useful as actual food, but it sure sends an interesting message -one that says "I really wish you'd eat my contact information rather than actually using it to contact me."
Of course, it's important to remember Meat Cards are only edible for up to one year, so if you haven't given them all out about 11 months after you ordered them, you probably better enjoy a delicious feast of business cards.