I just checked the browser and screen resolution stats for www.geckotribe.com and wow, what a surprise!
Firefox is wiping the floor with IE on that domain! One of my other heavily trafficed domains reverses the picture, but another looks almost exactly the same as this.
As recently as January, I was still getting enough visitors at 800x600 that I couldn't widen my layouts, but from the latest numbers, I think I can switch anytime now.
Ah, the sweet smell of progress!