Today only, shutterfly is offering 1 free sheet of address labels! The coupon code is FREELABELS. You will have to pay shipping ($1.99) and tax ($0.05 for me in MA), but for $2.04 these are a great deal. Instead of address labels, I sometimes just personalize them with "From the library of..." and put them on the spine of my professional books. Great way to keep track of them!