Re: 3d favicons

I'd favor making it possible to target the favicon with a canvas directly.
As in:

<link id="icon" rel="icon" type="image/png" href="..." animated="True">
> <script>
>   window.onload = function(){
>      var icon = document.getElementById('icon');
>      var ctx = icon.getContext('3d'); // or 2D
>      ...
>   }
>  </script>


That way you can put in anything you want (even video) at any speed you
want (realtime if so desired, or slower), with any technique you want (2D
canvas or 3D canvas).