Through Stephen Abrams' blog, I came across a fantastic TED talk by Erin McKean (biography, blog) on redefining the dictionary. As somebody quite passionate about dictionaries, I found this to be quite interesting.
One memorable way that McKean describes modern dictionaries as "a Victorian design with a [modern] engine on it." The old pursuit of authority is considered to be unimportant. The video is well worth watching for anybody who is interested in words.