When you update your application, you may no longer see the "Kindle Store" button on these applications.
To make a long story short, Apple has an iBooks application for iPod, etc. which works very well. (The only drawback is that you can't buy Broken Toys: China's Song on iBooks.) They have a basic rule for the applications that all purchases have to take place through iTunes. Amazon balked at this but didn't want their application turned off, so they removed the "Kindle Store" button.
However, you can still make Kindle purchases by going directly to the Amazon Kindle Store using your web browser.
This link will take you to the Kindle Store
(*Ahem*, I should also mention that this link uses our Amazon Associates number and this website gets a small percentage of each sale....so feel free to bookmark it...)
Here's a link to a relevant news story.
By the way, this is an excellent time to remind everyone that you don't have to have a Kindle Reader in order to enjoy great Kindle e-books. Amazon provides the following free Kindle applications for the devices listed below:
- iPhone and iPod
- Windows Phone 7
- Windows PC