One of the first things that new users of OS X Lion are apt to either completely love or hate with a passion is the change to "natural scrolling." This is like scrolling on an iPad or iPhone -- when you use two fingers to swipe down on a trackpad, whatever you're scrolling moves in a downward direction as well. The existing method, which I'll refer to as "reverse scrolling," has been in use since the first Apple Lisa shipped in 1983. With reverse scrolling, swiping down on a trackpad would move content in a browser window in an upward direction.
While recording a MacJury last night with host Chuck Joiner, MacObserver's Jeff Gamet, and The Loop's Peter Cohen, the comments from my fellow jury members seemed to indicate that most of us had very little trouble making the switch. Those of us at TUAW are interested to find out what kind of scrolling setup you're using on your Mac. Take the poll and let us know.