Whenever i receive holiday cards, I always arranged them on the mantle. However, a couple of years ago, I decided to have some fun with it. Now, my fiance and I rank them from best to worst on the mantle.
A few things can get you automatically to the bottom of the ranking
1) inclusion of any yearly update letter. We got one this this that was 2 pages front and back designed to read like a newspaper. I know they mean well, but if you didnt mention it to me over the course of the year, I really dont care about it now.
2) The use of any pictures on the front of the card. Usually it is just kids, but we are seeing more and more couples with their pictures on the cover. It looks cheaps and sometimes I even lay the card flat so i don't need to look at your ugly mug.