If I didn't at least refer you to the LGF Quiz. You, too, can attempt to determine the "who said it?": A Little Green Footballs commentator or a Late German Fascist. (Via Wonkette, who first directed my attention to the quiz.)
Like Tacitus, I think it's a bit unfair to hold a blogger responsible, even implicitly, for comments that others leave on his blog. Still, Charles Johnson has made it well-known that his policy is to try to delete comments that he finds offensive. Based on that policy, it's not unfair to ask why Mr. Johnson has, in the past, refused to delete (or even rebuke) comments expressing prejudice or hate towards Muslims. Does he not find those comments offensive (or "offensive enough")?*
Indeed, it seems to this Indiana boy that the LGF Quiz ain't much more than a case of chickens coming home to roost. And, judging from Mr. Johnson's reaction to the quiz, I'd bet that more chickens may be a-comin': It seems that Charles doesn't quite get that he's allowed his comment boards to get pretty far "out there,"**
*By the way, I raised this very concern on Charles' comment boards; decide for yourself whether you think his response was adequate.
**LGFCritic suggests that Charles may be in the process of purging his old comment boards of some of the more bigoted statements.
Update: See also LGFWatch. Let me suggest the following: If you've got at least two websites, apparently owned by different people, whose expressed purpose is to watch your every move and report on alleged racism, bigotry, and/or prejudice on your blog, you've got a public relations problem. A serious public relations problem. One wonders, then, what Bryan Coffman, who appears to be running for a seat in Kentucky, is thinking. Surely, there are less-controversial places to advertise.
(That said, I wouldn't recommend advertising on the Daily Kos either. Don't lump me in with other LGF critics -- you'll find I've got pretty significant political differences with Kos and Tacitus (who themselves have pretty significant political differences with each other), et al.)
Update 3: In the interest of balance, here's an example of an inappropriate way to respond to apparent trolls from LGF. (It also appears that the linked blogger -- Katheryn Cramer -- doesn't know quite as much about "DOS attacks" or the law as she seems to think she does.)