Somebodydial911 :

One possible solution to the problem of 'multiple profiles' would be to simply not worry about it. Define your own profile URL and then use XInclude to suck in some other profile that you're using in your <link> thingies:

<xi:include href = "http://purl.org/net/autodiscovery#xpointer(/html/body)">
 <xi:fallback>
  <a href = "http://purl.org/net/autodiscovery">
   Autodiscovery Profile
  </a>
</xi:fallback>
</xi:include>

Or something like that, anyway. Though, it's not like any browsers actually know how to handle XInclude...