I just got a 'perk' over at the Klout site, which gives you a score how you do in Social Media. The perk was 50 business cards, each with a different backside if you want to. The company that does this is called MOO. And MOO has an interesting bit of data about the history of business card that I think you will enjoy. Especially the bit where you get your business card back in an envelope and what that means. Here is the infographic.