There's a product made by Goo Gone called Sticker Lifter sold at craft stores. (Scrapbook supplies) Evaporates quickly but does the job fast. I find it much easier to deal with and less offensive smelling than original Goo Gone. You don't take the sticker off first because this product will remove it with the glue attached to the sticker. So much so they could even be used again ~not sure what for or why ~ but that's the way it works. Better than using paper towels and such trying to rub off the residue glue.
You can use it to remove photos from those old sticky page albums with out causing any damage to the photos...amazing.

my 1/2cent.