You're pretty much making a text book ad hominem attack. You're going after him instead of his argument. It's as simple as that.
That doesn't make it ad hominem. That's a phrase used in the context of a debate. jessedhillon isn't after the argument at all. He's attacking a certain behaviour.
ad hominem: "Your point about global warming is invalid because you slap your children and I don't like that."
not ad hominem: "You slap your children and I don't like that."