One of the most annoying things about the App Store is that when you downloading any app, it closes right after you start downloading it. This action not only hampers one's experience with the iDevice, but it also slows things down as you have to reopen App Store after every purchase again and again until you are done with your app shopping.
This is where the StayOpened tweak for jailbroken iPhones comes in to the rescue! With this new tweak, you can now keep your App Store opened while you are purchasing and downloading apps in the background.
You will, of course, require a jailbroken iPhone, iPad or iPod touch to install it.
StayOpened is available now from Cydia for free under the ModMyi repository.