the problem is that you haven't given them a tool to do that...
I don't need to give them such a tool because they were given such a tool free with their computer.
so your advocacy of .html as a "master format" has _already_ run into some very big obstacles, which you cannot overcome.
Nonsense BB, I have already showed you how customers can overcome this problem you are making, but you choose to ignore my suggestion.
besides, look at the very _topic_ of this thread -- ipads, and the huge number of them that were sold in just 9 months last year...
There now, we are getting to the real rub: Apple made a device which they claim to be an eBook Reader, among other things, except it doesn't really contain support for a reflow format, except HTML, and it won't even allow storage of HTML so that you can read it later. Rather, Apple chose to make this PDF paper-descriptor format the central supported format of their iPad device, and now PG needs to custom-support iPad. Now, I don't think that there is anything bad about supporting iPad, there is a lot of potential customers out there. And let's be honest, if I had the choice Kindle would be an EPUB device not a MOBI device, so Apple is not the only one's making badxxx sub-optimal choices of file format. But, if you want to support iPad, say "I want to support iPad" - don't say "I'm supporting PDF" when you are not doing so. Since PDF doesn't reflow and doesn't support multiple device sizes or shapes it simply means that PG supports iPad uniquely, and/or writes an on-the-fly HTML to PDF converter where a customer can tell PG which incompatible PDF-based device they own, and PG then generates their size-format of PDF for them. PG presumable also then allows them to specify what default font size they want, and how big the margins they want, and whether they read in portrait or landscape mode, etc. Or, you let the customer do this themselves using the tools they already own. Or, you BB, write them a free tool and distribute it freely from your website, or via the Apple company store. But none of this requires BB imposing yet another new boutique file format onto the PG community!