For the cards that have pics on both sides, I affixed the cards using washi tape to one edge of the card, so that I can flip the card and see the other side easily.
I also wrote the family's mailing address on the same page, so that I will have it ready for next year! (You can see it blacked out on the bottom/side of the pages). My pastor's wife says her n' her hubby pulls out a card each day, and pray for each family. This is a great idea, and with this book, just gotta turn the page each day and pray for a new family each day.
I hope that this idea has inspired you to store your photo Christmas Cards this way. I still have plenty of room for upcoming years of photos, and love that I can keep them all in one place, AND it isn't too bulky like photo albums.