Power Line is an American political blog, proviing news and commentary from a conservative point-of-view. It is written by three lawyers who attended Dartmouth College together: John H. Hinderaker, Scott W. Johnson, and Paul Mirengoff. The site gained wide recognition for its role in covering the Killian documents scandal that led to the departure of Dan Rather from the CBS Evening News. Power Line is among the most popular collaborative blogs active today.