Apple Giveth, and Apple Taketh Away. The Walled Garden approach Apple has taken with its App Store means that not everything you once bought is still available. However, that doesn’t mean you’re out of options for installing software that was previously downloaded:

Hello, I got the iTether app yesterday before Apple pulled it out, but my daughter didn’t get the chance to download it. How will I install it to my daughter’s iPhone? I back up my phone to my PC and I have the app in my file. Please help.

Rodante

We told you about iTether last night, a new app in the App Store that let anyone have unlimited tethering from their iPhone’s 3G connection for a one-time purchase of $15.

We were all amazed that iTether made it past Apple’s stringent App Store review process, and no one expected the app to remain available for very long. Apple has since pulled iTether from the App Store, and the developers behind the app have explained why.