If you haven't "heard" me talk about Artscow, yet, I think they are great! I really like their photo products. While some of them are cheesy (I haven't ordered a lot of the photo door mats or key chains, yet), I really like the quality of their prints, canvases, photo books, bags, etc.
Right now, they are offering 10 FREE! 8x8 photo books (8 20-page books, PLUS 2 39-page books)--you just pay shipping! Just insert the code 88FRBOOKS through 8/4/10, and your credit will remain available for 30 days.
Plus, if you're not already a member and you join now (it's totally free), you'll receive 1200 free prints credits, 3 8"x8" photo books, and other great photo gifts credits.