> 
> 
> There are various opinions on this topic; me, myself and I all would
> happily add xlink:type="simple" if, in return, we'd get
> xlink:type="extended" and external linkbases. If, in return, we'd use
> standards in XHTML, rather than home-brew proprietary solutions; the

My impression is that, in the market for which HTML was originally 
intended, people are voting with their feet for simpler linking 
constructs, in particular [[xxxxx]] and [http://yyyy  xxxxx]
in Wiki language (which uses HTML largely presentationally to 
achieve relatively semantic documents).  There are probably 
similar examples in BBS type applications.