Sampling from 500,000 unique visits from 2010 that I randomly selected, I note that roughly 2% of visits were from iPhone-sized displays and 2% of visits were f

Sampling from 500,000 unique visits from 2010 that I randomly selected, I note that roughly 2% of visits were from iPhone-sized displays and 2% of visits were from 800x600 or 1024x600. At most 2-3 additional percent of visitors might have had resolutions worse than 1024x768. (I am uncertain because in the long tail of atypical screen resolutions, a few are lower than 1024x768 but most are actually atypically high. So this is a ballpark.) Roughly 90-95% of visits had resolutions at least as good as 1024x768, with the modal resolution being 1280x800 (30% of all visitors).