Earlier quoted context omitted.
As evident from the comments above, one of OS X's biggest weak points is feature discoverability. I love how OS X stays out of your way, but most regular users never get to take advantage of greater complexity. You have to be in the mindset of one of 'us' (reading every update to Apple's PR) to get a handle on everything OS X can do.
Hardly, it was well advertised when Lion came out.
Exactly. If you got your first Mac post 10.7 (and you're the average user) you've got no idea you have such a feature.
Maybe you find it one day trolling through the menubar. Maybe you don't.