If you're interested, please check out my piece in Wunderkammer magazine about the rise of sabremetrics in baseball, and how to think about such movements.
Update: After rereading my piece, I realized that it could seem like I am suggesting that sabremetrics only started after the rise and popularization of the Internet. I know that isn't the case, and about Bill James and Baseball Abstract. Was just poorly worded on my part. Not a big deal; just so you all know.