If you don’t want your iPhone to disturb you during the night, or while you’re in a meeting, you can either stick it on silent and let it vibrate and annoy everyone, or you can use Apple’s awesome Do Not Disturb feature and block incoming notifications altogether.
Flusterless, an upcoming tweak for jailbroken iPhones, will make using Do Not Disturb quicker and easier by adding a handy toggle to your lock screen.