Dismiss Desktop Notifications in OS X Mountain Lion Immediately with a Swipe
Want to quickly dismiss a desktop notification without opening Notification Center in OS X? It’s easy, just hover over the notification with the cursor and use a two-fingered swipe gesture from left to right, swiping the alert to where Notification Center appears, and the alert will quickly zip away in a blur.
This gesture doesn’t close the notification, it just moves it off of the desktop and stops it from hovering over everything else. You will still be able to find it with all other alerts by opening NotificationCenter on the Mac. Remember, if you get tired of the desktop notifications you can always temporarily disable the service by option-clicking the menu bar icon so it turns from black to grey.
For those who have an iPhone, iPad, or iPod touch, you’ll find this to be very similar to the way dismissing notifications in iOS works by swiping onscreen too.
Nice little trick from Lifehacker.