I didn't know Roger von Oech had a blog. He's the author of "A Whack on the Side of the Head" and "Creative Whack Pack" -- which I like a lot. Why aren't I better at noticing blogs?
Anyway, I noticed this because Glenn Reynolds linked to a post of his about Kathy Sierra, a blogger who's been receiving death threats. Here's Sierra's post about her experience.
I've been saying women need to be tough and have a sense of humor about the nasty talk about them on the internet. That in no way means that the people who say bad things shouldn't be criticized harshly. I certainly think you're free to lambaste and belittle your opponents whenever you want, though it's usually best to ignore attacks and not give them a higher profile. I've been taking a strong free speech position and criticizing people who have been warming up to repression and censorship lately.
Nevertheless, threats of violence aimed at an individual are different, and people need to learn that lesson very clearly.