Get Inertial Scrolling on older MacBook & MacBook Pro’s
If you have an older MacBook or MacBook Pro and you envy your friends with newer models and their fancy inertial scrolling, envy no more. InertialScroll is a simple freeware utility that allows you to enable inertia scrolling on older Mac laptops, the only requirement is that they have multitouch trackpads (this covers at least 2009 and some 2008 models).
The app is very simple to use, you just enable the feature through the app in your menubar, and you can disable it the same way. You can check out InertialScroll here.
(For those that do have newer MacBook models and don’t like the feature, you can disable inertia scrolling rather easily too.)