Some of you will say that 840x525 is too small (resolution size, not physical display size), but it's a bit larger than 800x480 which is what most netbooks are these days.
Well actually, most netbooks run at 1024x600, at least the ones with a ~9" or ~10" screen size. Some of the newer ones with ~11" screens are even 1366x768. Only the very earliest netbooks with the nigh-unusable 7" screens had the puny 800x480 resolution.
That's not to say 840x525 wouldn't be a workable display size, but personally I know I find any display with less than 1024 pixels across rather irritating to try to use.