I've been long handing out something about the size of a moo card that I printed myself on regular thin printer paper. Some people have complained of losing them, but mostly I think they're received as cute. My witty copy helps too. I was just thinking that I want to go two sided and have a QR code of my contact information on one side and human readable on the other. moo may be a handy process of making that happen rather than figuring out printer dynamics on my own.