Every book I've purchased on the Kindle shows up in exactly the same font, and likewise for any documents that I email to my Kindle. If the Kindle hardware supports multiple font faces (aside from italic or bold face variants), I haven't seen any evidence of it.

Fortunately for me, I like the Kindle's font, so I don't consider it an issue for the type of reading for which I use the device.

Sometimes. Topaz books have their own "fonts". (Not real fonts exactly. It's complicated, but the effect is the same.) Mobi books don't.

It allows the same as the e-pub standard does, aka, font families (the face attribute in the font tag takes a valid like "serif").

http://forums.digitaltextplatform.com/dtpforums/entry.jspa?e...

Are all the kindle supported html tags.

Basically, Apple is doing exactly what Microsoft did with their early versions of IE6, where they rendered web pages differently than the others out there. They're ignoring a tag that's part of a standard because they think it looks better.

It isn't like you can say font=comic sans in an ePub book and expect it to take effect. What they're doing though is disallowing the setting of font families for certain types of tags.