Im seeing a lot of apps with iOS 4 support, which tells me they may be building in iAd hooks. Dont know how odious this will be, but Id like to have the option of going back to the non-iAd form if I want to. Its not standard for me to make a folder, e.g. ipa 09062010 and put all files from the trash into this folder, which is then sent to my NAS for safe keeping. Anyone else doing this?