Some of us use 24" monitors in the office, and often times we wish for larger images to fill the available screen real estate. As the first step, we have collected data on browser resolutions from visits to layout pages.
The most frequently used screen sizes are:
1024 x 768 (30%)
1280 x 800 (20%)
1280 x 1024 (13%)
Less than 5% of visitors have the resolution of 1900 x 1200, which is typical for a 22"-24" monitors. For the majority of visitors, our largest image size of 1100 pixels is sufficient to take almost the entire screen. Even in the Dim the Lights, or in the slideshow mode, many visitors never get to experience the largest size we are offering! That being said, we are indeed considering adding a larger image size to provide the best possible viewing experience for the lucky ones with large monitors.