The Macbook Air and the recent incarnation of the Macbook Pro have some neat multi-touch features built in. You can e.g. navigate forwards and backwards in Safari or the Preview application, zoom in and out in iPhoto or turn images.
Unfortunately, this only works with some Apple applications out-of-the-box. (Preview, Safari, iPhoto, …)
Especially the three fingers swipe to navigate forwards and backwards would be really handy in Firefox. After a short google search, I found this article in the Apple discussion forums, which links to a system enhancement called MultiClutch. With it you can define per application which multi-touch gestures you would like to map to which keyboard shortcuts.
My current mappings:
Firefox
- navigate backwards: Swipe Left => Command+[
- navigate forwards: Swipe Right => Command+]
- close current tab: Zoom Out => Command+W
- open new tab: Zoom In => Command+T
- reload page: Zoom Out, Zoom In => Command+R
AdiumX:
- switch to next chat tab: Swipe Right => Command+Right
- switch to previous chat tab: Swipe Left => Command+Left
Skype:
- switch to next chat tab: Swipe Right => Command+Option+Right
- switch to previous chat tab: Swipe Left => Command+Option+Left
