Apple Thoughts: Apple to End Endless OTA Downloads? Maybe

" Looks like Apple's begun charging full price if you try to download an app you've already bought over the iPhone. This did not used to be the case - previously you'd be given a dialog stating you'd already bought it and you could go ahead and re-download it for free. Now the dialog says you can still re-download it for free on your computer (via iTunes), but if you want to download it again directly to your iPhone, you've got to buy it again."

Obviously a side-effect of having the ability to switch accounts, you can't just download the same app over and over again on your iPhone itself. Not all users are having this problem, though, so your mileage may vary, but it's obvious that a change is a-comin'. It's a change I'm not happy with, but at least, for once, I understand it.