Is there any work being done to finalize the XFrames standard?  It would be nice to have this worked on so that it is a recommendation and can be implemented, eg by Firefox or Konqueror.  

As well, it would be very nice to add at least 1 more option to the XFrames definition - the ability to define frames on different screens, eg:
      <group compose="multiscreen">
                 <frame xml:id="palm" source="google.com"/>
                 <frame xml:id="bigscreen1" source="tv://ntsc/1"/>
                 <frame xml:id="bigscreen2" source="prettyPicture.jpg"/>
     </group>

This probably needs to be controllable permission wise, but it would be really nice to allow multi-screen AJAX applications to run with this and have well defined locations for where the frames appear.  (Yes, some of us need LOTS of screen real estate - some users will have 5 monitors.)

The other thing this would allow on a mobile browser is well-defined control of additional off-device browser windows - for instance, consider a Palm device as "screen 0", and an additional large screen remote device as "screen 1".  You point the IR device at the large screen, load a web page with XFrame support, and your IR device controls the large screen.  Perhaps that large screen supports a "tv" URL type - you can then control the large screen device just from the web page by selecting what channel and it changes to, for example:
source="tv://ntsc/28"
or, now you want to browse on the big screen, you do your searches on a small-screen, setup with a local CSS to change screen where it loads to default to "bigscreen1", and voila - you have a Palm controlled large-screen browser window.

Thanks,
Bill Wallace
Agfa HealthCare.