No Screenshot Flash is one of those tweaks you download once, and after that, you forget it's ever there. When you think about all the features the iOS Devices have to offer, the screenshot feature is just one of them. But hey, some people don't like that darn flash that the screen makes. You might be playing a game and want to take a screenshot in action, this will allows you to do that without disruption. The tweak is free anyways so nobody should be complaining, but check it out. You can find No Screenshot Flash in Cydia.