John Nack on Adobe: Why your Web content will look darker on Snow Leopard
If you're a Web designer, expect your CSS colors & your untagged/unmanaged images to look darker on Snow Leopard than on previous versions of the Mac OS. You'll also see less of a visible color shift when going from Photoshop to Flash or other unmanaged environments (e.g. Internet Explorer).Gamma error in picture scaling
"Photographs that have been scaled with these software have been degradated. The degradation is often faint but probably most pictures contain at least an array where the degradation is clearly visible. I suppose this happens since the first versions of these software, maybe 20 years ago."
found via reddit. Should consider this the next time I edit a bunch of photos