Apple wouldn't approve our app until we blocked the Kindle Store button from loading on the Kindle Cloud Reader website. It never occurred to me that Apple would try to exercise control over how third-party websites are rendered inside webviews, but it turns out they do.
Wow. I'm not sure why this isn't all over the tech press. Apple forcing developers to modify third party websites is way, way over the line of what I would call ethical.
I'm generally an Apple fan, but this is nothing more than unrestrained corporate greed.