Peter Klein has a list of five blogs that make him think:
http://organizationsandmarkets.com/2007/04/26/five-blogs-that-make-me-think/
Robin Verghese of http://3quarksdaily.blogs.com/3quarksdaily/followed up with his own list. Many blogs seem predictable after a while. I keep shifting. Some that I have been visiting regularly in the recent weeks (whether they make me think or not is not clear) are 3qurakedaily, Andrew Leonard's "How the world works" at salon.com (http://www.salon.com/tech/htww/index.html), Madhukar Shukla's AlternativePerspective, Rajshekhar's fracturedearth and Mark Thoma's Economists's view. No offence meant to others whom I visited in the past and am likely visit again.
