The term "ad hominem" is typically used to describe the fallacy of attacking the person making an argument, rather than the argument itself. Sure, I'm discussing his character, but I'm not trying to win any argument here - he may be correct in what he's saying.

> The guy invested his time and effort trying to improve the world by writing a technical book, which he then proceeded to give it away for free

And I think this is certainly laudable, especially since they seem to have helped so many people. But he also called the Rails community "pricks, morons, assholes, and arrogant fucks who didn’t care about the art or the craft." and I think he should be held accountable for that, amongst other things.

I wrote a comment about the author's behaviour in public forums and in blogs, something I think he should be held accountable for, and something which I believe hurts both him and the communities he participates in. I believe this is relevant, and I'm entitled to discuss this here.