These days, a screen resolution of 800 x 480 is considered pretty pathetic for a smartphone. The Samsung Glaxy S3 has a screen resolution of 1280x720, just a smidgen below our 1280x800. Given these facts, the whole "tablet optimized applications" worry is something of a red herring, IHMO. We are no longer dealing with apps that were written for 480x320 screens and stretched to fill a tablet. We're, by and large, talking about apps that are written to adjust to phones with screens as large as 5.5" (for the Galaxy Note) and resolutions that would have seemed generous on 17" monitors not too many years ago.