And if you notice in that graph, iPhone OSX 0.81% and Android 0.07% which is why a mobile skin is so important these days. Also designing using html5 and css3 which is what this forum is based on makes logical sense.
While the browser that is in the majority does not support HTML5, the greater majority of current browsers are already accomplished enough in rendering it correctly. It seems finally that IE9 will be able to deal well with HTML5 and CSS3.
So design with the future in mind
Also, 4x3 displays make me feel claustrophobic! There's just so much more room with 16x9.
Why on earth they can't make the settings easy to actual set ... maybe the planets need to be in alignment or something, it's not working like a brought thing