safari tab switch with multitouch gesture

I saw this on apples site [https://www.apple.com/safari/#tabs]
i thought id share it with you incase you dont already know about it, because its a fantactic feature…

in safari, on mountain lion, you can switch tabs with a multitouch gesture.

when you have more than one tab open, just pinch as if you were trying to zoom out on a photo in iphoto.

the tabs will turn into a sort of cover flow, and you can swipe left and right to change to a new tab!