Reasons to still design a website for 800×600 resolution:
A few people still have old computers that don’t have a higher resolution.
A few people still choose to stay with the 800×600 resolution for eyesight reasons.
Despite the fact that many people have higher resolutions available to them with their newer computers, computers often ship with the setting at 800×600 and people don’t change them (either because they don’t know they have the option to change them or they don’t know how.)
And this last one defies any of the statistics you may have seen to prove my points otherwise: people don’t always browse at the full screen size. I know I don’t often because I like to multi-task. So although the screen is set at a higher resolution I’m browsing the web at a smaller size.
