Let me step away from digital humanities for just a second to say one thing about the Cronon affair.
(Despite the professor-blogging angle, and that Cronon's upcoming AHA presidency will probably have the same pro-digital history agenda as Grafton's, I don't think this has much to do with DH). The whole "we are all Bill Cronon" sentiment misses what's actually interesting. Cronon's playing a particular angle: one that gets missed if we think about him as either a naïve professor, stumbling into the public sphere, or as a liberal ideologue trying to score some points.