I use Ubuntu for all my website design. Of course, I know more of the technical side than the visual, so its not a huge deal for me to use the GIMP instead of Photoshop. You joke about IE being the missing ‘favourite’ app. It’s certainly not one of my favourites, but it does pose a big problem to not have it available. Testing sites in IE is a huge pain (I use VirtualBox to run XP). I can see why Linux wouldn’t work for many people, but it is fine for my own purposes.