The points this article makes no longer apply. Unless you need webgl, appcache or contenteditable there's no good reason not to support at least IE9. The effor

The points this article makes no longer apply. Unless you need webgl, appcache or contenteditable there's no good reason not to support at least IE9. The effort to support it is negligible, if you're already doing opera, firefox and webkit. And if you're doing contenteditable on all three of those, you might as well do IE as well and make those gray hairs actually mean something.