On Tue, 18 Oct 2005, Jukka K. Korpela wrote:
>
> you may make some conclusions from the fact that
> - there is no real semantic definition for <em> and <strong>
>   (e.g., how they relate to each other, and what does it mean
>   to nest them?)
> - nobody cared to add markup for "unimportant" or "de-emphasis",
>   despite the obvious need as soon as you start thinking semantically.

You may be interested in perusing (and commenting on) the definitions of 
this and other elements proposed in the Web Apps 1.0 draft:

   http://whatwg.org/specs/web-apps/current-work/#semantics 

Cheers,
-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/        U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'