eBooks, What Format Do You Do?

[Whimsical]

The Kindle format is just mobiPocket + DRM; the Kindle can definitely read mobiPocket, and I suspect the iPhone app can, too.

Kindle can read unprotected mobi files directly. Kindle for iPhone can only read books purchased from the Kindle store.

BTW, Kindle is now available to international customers, in case you weren't able to get one because you're not in the US.