Not to my knowledge. But I'm sure there is somebody out there.
> Is everybody using Webmaker?
No. I use MifMucker (since I know the author :-).
> Does Frame Technology sell a solution to this problem?
In a round-about-way, yes. Frame has the SGML work bench for
FrameBuilder. It is supposed to let you translate between builder and
SGML. I haven't had time to play with it. To my knowledge, Frame
does not have anything for FrameMaker.
> Unless I hear that www_and_frame actually serves some useful purpose,
> I'm going to tell the publisher no thanks.
If you have no intent to support it, I'd tell them no. If www_and_frame
is distributed with the book, all you will get is more e-mail
on "How do I get it to work?"