We found something interesting today with iOS 7. It involves Safari and the iTunes Store app.
If you are using iTunes but notice that is shows up blank, it may have something to do with your Safari settings:
If you have Safari set to always block cookies, you may notice that the music store shows up as a blank page.
Set it to ‘From Third Party Advertisers’ if you want to remedy this. (settings>Safari>Block Cookies)
After that, things should be working properly.