Ouch!  Now that was a painful thread I'd rather not revive:
  http://www.abisource.com/mailinglists/abiword-dev/99/March/0184.html
In short, no.  Too many core developers have served their time in the 
HTML-parsing gulag to be willing to write such a thing ourselves.  In fact 
our temptation is to warn off anyone crazy / brave enough to try.
That having been said, I can't see myself refusing patches for a *really* 
good importer.  Last time I checked, though:
  - Mozilla was still not GPL-compatible, and 
  - the MSIE code is not available at all. 
(Just though I should calibrate "good" for you.)
Paul