Do you send holiday cards?

I found a very interesting blog entry over at Small Biz Survival that I wanted to share with everyone.  The entry's premise is very simple: if you are a small business, send holiday cards to customers.  No, no e-cards, but actual cards.  They are appreciated and remind your customers/clients of your existence in a busy world, and that is NEVER a bad thing for business.

Do you send holiday cards to your customers and do you see a benefit in doing so?