I just received my first batch of business cards from Moo. They are excellent in terms of printing.
They are not so good in terms of design. I was eager to get cards printed and ready to give out. I used some of my favorite photos of Mochi and the bay. They are too dark to be ideal for business cards.
Thinking of business identity, I favor a logo that is both the website logo and a prominent feature of the business card. Having just preached that, I'll practice it soon.