Macworld have published a comprehensive comparative review of nine different online photo services:

“There are a lot of online photo services out there, but there can be a huge difference in results from one online photo finisher to the next. To find the best option, I took a look at nine online photo ser-vices: Kodak EasyShare Gallery, Mpix, PhotoCheap, PhotoWorks, Shutterfly, Snapfish, Wal-Mart, Webshots, and the Order Prints option built into Apple’s iPhoto 5. I sent five different images to all of the services and then asked a jury of Macworld editors to evaluate the prints’ image quality. I incorporated their opinions into my overall evaluation of the services.”

Website: Macworld - Turn pixels into prints

Thanks to Terry Chay for letting me know about the article.