On Sunday, January 22, 2012, Greg Newby <gbnewby@pglaf.org> wrote:
> Yes, confirmed.
>
> Having numerous formats derived from a single master is
> a long-time goal.  We've had some success with RST and TEI,
> and I've encouraged new projects to consider RST.  There
> are still some limitations, though...
>
> On the many, many words on gutvol-d recently about poor
> results with auto-conversion from HTML to other formats (epub
> and mobi, among others): this is often due to choices that
> producers make about using HTML to impact layout, rather than
> just structure.  Enough said.
>  -- Greg

Au contraire. I think there are plenty of producers who don't understand the distinction.

Why aren't WWers send back projects that include destructive layout tagging, or don't include important structural tagging? I can think of any number of reasons for rejection that are less disruptive to the reader's satisfaction.