Starting from Mac OS X Lion, scrollbars have been transient. That is, they disappear when your mouse stops moving. Some sites, like Facebook, even emulate this transient scrollbar for Windows users: ...
Is there any research to confirm whether “classic” scrolling or OS X Lion's scrolling style is “better”?
...or scrolling the content vs. scrolling the window (video for Apple's "natural scrolling") I'm a happy Lion user now and (as many of us know) by default, the scrolling mechanism is reversed. The ...