There's no such thing as academic freedom of Thomas Kuhn would nat have had to write "Scientific Revolutions". As long as a professor has a say in hiring a colleague, ANY idea he/she has (about what color a tie should have, whether one should be clean shaven or not etc. etc.) will enter into his/her decision. Psychology has reams of data on that. But there's a difference: ANYTHING they DON'T know cannot be held against you. The more they know, the easier it is to find excuses. Or: which of the other candidates who did not have a (n identifiable [!!!]) blog was maybe the next campus shooter etc.? Maybe the problem takes care of itself when everybody has something -thanks to Web 2.0- that can be held against them. Then again is the playing field even.