If you’re like me, since you’ve upgrade your Mac to Mountain Lion, even the default four seconds that a notification remains on the screen can bug you. You could disable notifications entirely, or even for a period of time, but that might be too extreme for your situation. Instead, to get rid of a single alert immediately, do a two-fingered swipe on the alert banner, from left to right, and it will disappear from the screen.
This assumes that you have a trackpad, although Lifehacker points out that a single-finger swipe will work with a Magic Mouse. And, as OS X Daily points out, this doesn’t close the notification, but instead moves it off of the desktop.
Tip from Lifehacker, via OS X Daily
Cristian Stan says:
Hi, Evan, do you use a Magic Mouse? I did, but I didn’t like that I had no option for touch-sensitive clicking. I gave it to my sister-in-law :))
September 26, 2012 — 3:22 am
Evan Kline says:
On my iMac, I use a Magic Trackpad. On my Air, I just use the built in trackpad. I’ve never tried the Magic Mouse.
October 1, 2012 — 5:13 pm