Tim O'Brien of the Star Tribune pulls out the trusty old timestamp attack against conservative bloggers. The gist of the argument is that any blog entries during the business day indicate a sinister plot involving the day job of a part-time blogger. O'Brien makes assumptions about Michael Brodkorb's work hours and then concludes that Brodkorb has a "really nice employer."
Kennedy v. Machine has a nice rebuttal here. This issue came up last year when the both Nick Coleman and City Pages questioned the work habits of the Powerline guys. Mitch Berg had a good response to that attack here and here. I dubbed the non-story "Coffee Break-gate."