Links to Click: PicTreat
One of the best photo touch up sites I've ever seen. Take a picture, upload, and treat. You'll see flat images come to life after getting them "PicTreated". Lighting and contrast issues will be remedied with a single click, even unsightly blemishes.
Right now the site is free, but after snooping around I get the impression that it's looking for ways to monetize this great idea. You can sign up for a free account, or use myspace or facebook connect to automatically be ready to go.
Here's a photo I uploaded and treated.
[Via PicTreat]