And there's definitely a market for it. Now, iPhone users appreciate having eReader as an app and now Stanza has more to offer readers but having more competitors is always good for mobile warriors. And let's not forget that the iPhone is only a minority in the smartphone market (even though it's not a smartphone).
There is Android where Amazon is the default music seller. Let's not forget the millions and millions of Blackberries and Windows Mobile devices. Palm folks already discovered eReader and would also appreciate Kindle compatible reading materials.
Let's hope some folks over at Amazon will do some math on this and see that volume speaks, well, volumes. And Amazon should continue to innovate Kindle. A lot of the revenues from selling books on other mobile platforms can only add to the bottomline and maybe even help lower Kindle's retail prices and the search and development that went into it.
And if Amazon is afraid people will stop buying Kindle, let me tell you this. You've got a nice dedicated reader in Kindle with a bigger screen than smartphones and most mobile devices. In time you'll also be lowering the price point for Kindle. People will flock to it as long as you give mobile readers a reason to buy it.