Here are some of the places where I reliably find provocative thought and great insight:
Walter Loeb's Retail Blog on Forbes
Walter brings the breadth of history and the depth of a curious mind to the happenings of today in retail. Keep on top of retail by checking out his perspective of the retail world.
Carlos Alvarenga's blog Reconnomics pursuing a "Global view of economics, risk, business and society" shows how risk and uncertainty surround us and suggests that the answer to our uncertainties may just have been found elsewhere. Consilience, anyone?