Look no farther than the Words About Words index at Wordspy.com. It's chock full of writers, philosphers and many others who all have something to say about the words we use.
Check out their front page too, for regular updates on newly coined words. And what do the folks at WordSpy have to say for themselves?
This Web site is devoted to lexpionage, the sleuthing of new words and phrases. These aren't "stunt words" or "sniglets," but new terms that have appeared multiple times in newspapers, magazines, books, Web sites, and other recorded sources.