Continuing our semi-regular topic of “if it exists, someone collects it”, here are sites for the International Business Card Collectors, American Business Card Club, and Bluewater Business Card Club. Learn how to store your cards properly (no PVC please), click through some impressive photo galleries (including 3-D popup cards), and then take a look at historic Victorian tradecards. I don’t exactly collect business cards, but I can’t remember having thrown any out. (IBCC via memepool)