[DiapDealer]

Regardless of table support in MOBIPocket vs Kindle1 vs Kindle2, my point is that it's not nearly time to start abandoning all concern for the older MOBI format/devices entirely (which is the impression I got from Oxford-eBooks). I myself, will continue to ensure that the MOBI portion of the hybrid MOBI/KF8 file is flawless and as visually appealing as possible; for as long as Amazon continues to sell ebooks for devices that only support the MOBI format (which I expect to be a good long time, yet). I would encourage other content creators to so the same.

Just worrying about the KF8 formatting being right and letting the MOBI portion just "happen" without a glance at—or concern about—its quality/viability is an example of shoddy craftsmanship, IMO. If that format (MOBI) is available to be delivered to the device of a customer who PAID FOR that ebook (and it is available if you're converting with Kindlegen and uploading to KDP), then you have a responsibility to make that MOBI version as good an experience as possible for that customer.

It's not nearly time to start selling ebooks whose creators just didn't know/care that the same code that creates pretty dropcaps in KF8 (or a tables that looks spectacular in KF8) will look atrocious in the MOBI version if you don't handle it correctly with the special media-queries that Amazon provides for such situations.

As long as people can still purchase your ebook in the boring old MOBI format ... then I feel you should still be concerned about the MOBI format looking smart.