A pretty nice introduction to color management and what it means. In typical Petteri style, a bit cheeky and humorous. My personal highlight: If you're shooting or converting to Adobe RGB. Adobe RGB pictures displayed on a non-colorspace-aware application or badly color-managed system will look wrong, wrong, wrong. The colors will be flat and gray. If you like them that way, fine -- but remember they'll come out bright and vivid if you send them to a competently run photo lab that prints from digital originals. To ensure flat and gray prints, use sRGB and make them flat and gray in your image editor instead.