I'm kind of chickenhearted once a project is off the press. I'm afraid I'll find a mistake. And, unlike this here blog, once something is printed there's no going back and fixing things.
That's why this thank-you card gave double its pleasure. Receiving a card via snail mail is good news enough, but one thanking you for doing your job? Well, I just don't know what to say about that.
I do know, however, that sending someone a card is a really nice thing to do, and I'll make sure I do it more often.