 We're talking today about the cards you put in an envelope and mail, or that you hand to someone, or that you put on top of a gift. I know that you can send greetings electronically, and social media has all sorts of ways to send messages and best wishes, but the traditional greeting card is still working. I read recently that the greeting card industry is around $7 billion a year in the United States. That's a lot of birthday cards and get well cards.