i was just wondering if anybody has tried it yet.. umm i was looking in my Itunes folder.. and theres a folder named "Mobile Applications" and in there, there was the apps that i downloaded from the App Store... each app is IPA format. i was wondering, if someone send that file to someones e-mail, and they drag it to the applications section. will it work? for example. lets say a friend online has an iphone, and they bought Moocow, and i say i want that..but i dont want to pay for it... so he sends me the "moocow" file via email, and then i later place it in my Applications section.... will it work?? anyone wants to try it out?