I know, I'm a bit behind the ball on reporting this fact. But that's probably because I don't have a Mac, and therefore while I'm happy to hear the news, it's not something that has much in the way of direct impact on me.
It's good for Amazon to get this app out there, and I'm really not surprised to hear they put some emphasis on it. Afterall, they'll be in a lot of competition with Apple, what with the iPad out in mere days. Let's be real, if there is one thing that Apple does well, exceptionally well, is make all their stuff interact smoothly. iPods are good on a PC. But rock when connected with a Mac. Their backup devices just natively work with their platform. They make the task of interacting with the equipment easy. If you want any chance at garnering any of that Mac based user supprot with the Kindle, you damn well better make your app work on any and every platform they've got, because you can bet Apple will do that for their bookstore/reader app.
As to how good this app is on the Mac? My best guess....not much different than on the PC. So probaby not as good as they want it to be. But it's there now. (If I had to guess, a little too late to make enough impact to matter.) Still, if you have a Mac, and already use a Kindle, or the Kindle iPhone/Touch app, seems a no-brainer to me, to grab this and install. Even if you wouldn't normally want to read on your Mac, having the option to is a good idea. And hey, it'll read .prc and .mobi files that way, so if you don't have another app already to do that, there you go.
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