> IE 9/10 are actually pretty decent. They don't have a lot of the not-quite-standards-yet bells and whistles Webkit's rapidly iterating on
IE9 is missing a lot of neat stuff which others have had for quite some time (limited CORS or D&D, no text-shadow, offline apps, transitions, placeholders, gradients, animations, xhr2, classlist, History API, typed arrays, async scripts, strict mode, webworkers, file & filereader API, 3D transforms, websockets, flexbox, requestAnimationFrame, datalist, page visibility, forms 2, ...)
IE10 is significantly better, but still behind (mostly due to no webgl and fullscreen)
IE9 is missing a lot of neat stuff which others have had for quite some time (limited CORS or D&D, no text-shadow, offline apps, transitions, placeholders, gradients, animations, xhr2, classlist, History API, typed arrays, async scripts, strict mode, webworkers, file & filereader API, 3D transforms, websockets, flexbox, requestAnimationFrame, datalist, page visibility, forms 2, ...)
IE10 is significantly better, but still behind (mostly due to no webgl and fullscreen)