Great cards Harry and Jazzyvee. Thanks, Pauldo. Rusty, did you find logos with already transparent backgrounds or did you have to render the backgrounds transparent in PS?
For what it's worth, I create cards in Avery DesignPro (a free download) and print them myself. And there's no doubt in my mind that QR codes are the thing of the future. Several biz cards I picked up at NAMM had them and I usually got comments on mine, which link to sound clips on Fandalism.