I use two different methods to keep my photos clean. One, I often wear cheapo cotton gloves when working with them; and two, like the others have mentioned, I wipe them clean with one of those micro fiber cleaning cloths used for glasses and camera lenses. I cringe every time I see someone passing their photos around a group of people, all of whom are getting fingerprints all over them. The acids from the skin and lotion products will over time ruin the pictures if they are not cleaned. I always use page protectors for that reason and am currently figuring out how to make page protectors to fit the oddball size pages of my first Cinch bound book.