Good article from Wall St Cheat Sheet
http://wallstcheatsheet.com/trading/heres-the-proof-day-trading-is-dead/?p=20096/
Better rebuttal from T3Live blog
http://blog.t3live.com/2010/10/mike-lee-answers-all-day-trading-is-not.html
I second Austin's recommendation for T3Live, I started with them about a year ago and it has been terrific. There are traders of all different styles from scalpers to swing but the guys I really watch and listen to are Sperling and Redler. Marc is a huge trader while Redler is more calculated...