I'm guessing the issue is when an app initiates the 'purchasing process' for a specific product, and then transports the user to Safari where whatever payment mechanism the vendor has set up completes the transaction. (And then gives a file to download which will open the original app again.)
Therefore Kindle would be safe, because you cannot search for books inside Kindle, it just has a link to the Amazon website.
That would make a little bit more sense to me, because I can see Apple's objection to 3rd party vendors circumventing the Apple-controlled purchase system when people shop via an iApp. For instance, some users might not even understand that the app has switched them to Safari, where none of the content is approved by Apple in any way. People go from feeling safe about using the AppStore/AppEcosystem, spending money etc., to worrying whether they'll be victims of fraud when ever they make an 'in-App' purchase.
It could just be that Apple wants a piece of the pie, but anything that makes iPad less attractive than Android will hurt its bottom line at the same time.
Therefore Kindle would be safe, because you cannot search for books inside Kindle, it just has a link to the Amazon website.
That would make a little bit more sense to me, because I can see Apple's objection to 3rd party vendors circumventing the Apple-controlled purchase system when people shop via an iApp. For instance, some users might not even understand that the app has switched them to Safari, where none of the content is approved by Apple in any way. People go from feeling safe about using the AppStore/AppEcosystem, spending money etc., to worrying whether they'll be victims of fraud when ever they make an 'in-App' purchase.
It could just be that Apple wants a piece of the pie, but anything that makes iPad less attractive than Android will hurt its bottom line at the same time.