Many iPhone users, myself included, have long complained about Apple's policies which have locked consumers into high prices for low quality service. Arguably, they have also run the App Store like a dictatorship preventing applications that might potentially compete with products that they offer or sell.
The Federal Communications Commission recently submitted interrogatories to Apple in its ongoing investigation of Apple's monopoly on applications and vendor lock-in with AT&T. Below is Apple's response to those interrogatories.
Bear in mind, that after hearing from several developers, many have had issues with applications being denied without any justification from Apple. They simply recieve a denial in the form of an email with no further information. Examples include versions of Lyrics, Pocket God, and numerous other programs listed at this site.
At the bottom of Apple's response are links to several news articles from affected developers that came out after Apple's response. I will try to keep this list current.