I think the post card is the new business card. No seriously! They are so functional, after all they're big enough to put several product photos on plus your contact info and logo! I just finished designing a postcard / handout for Rhonda of Cozy Knits Designs. See how she was able to display 7 of her beautiful hand knit items on the card...what a great way to remind someone of who you are and what you sell, especially if you plan on handing these out at craft fairs or to numerous boutiques.