This is such old stuff I'm bound to have forgotten much of it. But here goes…
The first Big Problem was Rush's "I hope he fails" comment and the conservative commentariat's scramble to distance themselves from it, based mostly on an egregious misinterpretation of Rush's intent, which was actually crystal clear.
Jeff responded with the Hot Air article, which demonstrated in great detail that many on "our side" were more concerned with being tarred by the left's always-broad brush than with declaiming the truth. Because Jeff had shined an unflattering light on people (including [said blogger]), he caught a lot of flak for it. That's about when Malkin stopped returning his calls.
The next Big Problem was with [said blogger]'s insistence on calling Obama a "good man" after his first election, despite the mountains of evidence that he was anything but. Jeff deftly exposed [said blogger] as a shallow sycophant who was angling for the croc to eat him last rather than declaiming the Known Truth about Obama.
The worst Big Problem was when [said blogger] decided it was time to put Stacey McCain in the dunking stool to distance himself from the Left's inevitable accusations of RAAAAACIST after something Stace posted.
Using nothing but theories of language, Jeff calmly identified [said blogger]'s ass-covering witch hunt as resting on corrupt, left-wing assumptions about how language works.
What ensued was a days-long dialog — mostly between Jeff and [said blogger] but a lot of us regulars chimed in — about Jeff's bailiwick: intentionalism, which is a description of how language works, that also identifies many of the Left's dishonest and incoherent attempts to hijack meaning and mold it to fit the mob's hysterical demands.
Jeff's demeanor for the first few days would make Job look like a hysteric. He used naught but logic, naught but explanatory language, eschewing utterly personal invective or insinuating that his interlocutor was a moron.
I still cannot tell if [said blogger] got what Jeff was saying but refused to accept it (he'd keep repeating back Jeff's ideas in a distorted way) or if he really could not grok what Jeff was saying. (Lawyers often do, because their concern is what you can prove, not what is.)
This dialog took place at proteinwisdom, at Little Miss Attilla's blog, at [said blog], and on a late-night IM chat involving me, Jeff, [said blogger], and a few of [said blogger]'s peeps.
After days of going back and forth, Jeff commented on [said blogger]'s blog (in response to some trash talk from [said blogger]'s peeps) that if they were going to hang him, he'd be glad to bring the tree.
[said blogger] went ballistic with glee. Finally (in his mind) he'd caught Jeff employing a violent threat, right there online, where Jeff couldn't delete it. He began to express his happiness at repeating the phrase that "JEFF GOLDSTEIN IS A LYING LIAR WHO LIES" (something to that effect). He described the satisfaction he got in typing those words and reveled in the chance to destroy Jeff both as an internet presence and as someone who could make a living as a writer.
[said blogger] got even weirder after that. He "Google-bombed" a lot of dead threads over at Protein Wisdom with links to allegedly awful things about Jeff. He circulated toxic emails to other bloggers on the right about Jeff's perfidy (Pablo can hook you up with those).
[said blogger] claimed that his efforts to destroy Jeff were a means to "protect himself." The only other time I'd seen similar behavior was from a bipolar lawyer (with Paranoid Personality Disorder) who went off her meds during a manic phase and did all kinds of crazy stuff to destroy an internet forum that had wronged her. She also claimed she was "protecting herself."
[said blogger]'s behavior was WAY out of proportion to the "offense" Jeff had delivered. Later digging shows that [said blogger] often pulls this kind of crazy shit behind the scenes when he feels that his honor has been sullied. His ties to Barrett Brown and Anonymous don't speak well of him.
So yeah, he's perfectly reasonable in most contexts, but when certain of his buttons are pushed, he goes apeshit.
And because of his reputation with the rest of the 'sphere, his smearing of Jeff's reputation stuck.
And that's as short as it gets.