From Macworld UK:

The MacBook Air has become the best advertisement for why companies should use LED (light-emitting diode) backlights in notebook screens, and is driving adoption, according to market researcher DisplaySearch.

Is Apple so good at leading the way into new technologies (or ridding old ones) because they can predict what's cool, or do things become cool because Apple says so? And who fields the R&D cost for things like this -- that is, do other companies get some sort of benefit because Apple's already gotten Asia to mass-produce this jive?