Tim Bray is upset that Keynote does not have an HTML export feature.

I agree it's a lousy feature to be missing. But I would have thought that Tim (being an author of XML and all) would have realized that Keynote's file format is XML (known as APXML), and can be transformed as desired.

I had assumed that someone would have already written a converter for the APXML format to some kind of HTML, but I can't seem to find anything.