These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Acceptable Targets: For the site's commenters: racists, Conspiracy Theorists and sometimes religious people as a whole. For the people mocked: atheists, gays, interracial couples, left-wingers, non-whites, Jews, women, and heterosexual White Anglo-Saxon Protestant males who dare not hate all of the former.note The saddest part is that most of these people actually mean it. Unlike Encyclopedia Dramatica, almost none of them are simply joking.
Quite notably, Andrew Schlafly's declaration that "E=mc2 is liberal claptrap." Notably, this stems from his dislike of moral relativism, which has absolutely nothing to do with general relativity.
Dude, Not Funny!: The reaction of many after a quote from a woman who was obviously extremely mentally ill was posted. It's one thing to laugh at the willfully ignorant, but quite another to make fun of people who are clearly ill.
Subverted by Femitheist Divine, a female supremacist who had made some incredibly disturbing quotes. After she seemed to commit suicide, the site didn't post any more of her quotes and the commenters stopped snarking and insulting her out of respect, instead saying that they wished she had gotten some help. However, Femithiest had only faked her death, and once she saw the reaction she tried getting rid of every trace of her faked death and came back worse than ever. FSTDT's commenters went right back to snarking and insulting, with some believing that her faked suicide put her beyond redemption.
Fridge Brilliance: Yes, even the fundies get their moments. Vox Day, from the site Vox Populi. His name may look like gibberish... However, if one pays close attention, one could realize that his name sounds like vox dei, which means "God's voice" in Latin, meaning he thinks his word is God's word.
More likely, a simple reference to the phrase "Vox populi, vox Dei.", which means "The voice of the people is the voice of God." I.e. "this is what the majority has decided, and that's that". Not quite the same connotation.
Actually, follow the transitions from Vox Day to vox dei to vox theo to voice of theo, and then look at Vox Day's real name, Theodore Beale...
Fridge Horror: This. At first it just seems run-of-the-mill creepy, then you start to do the math and a slow realisation sets in...
"Funny Aneurysm" Moment: After a fundie made a ludicrously inaccurate statement about how the media wouldn't say anything bad about Obama even if he were caught red-handed doing something incredibly illegal, one commenter took it upon himself to "fix" the quote so that it better represented reality, claiming (paraphrased) that Rush Limbaugh wouldn't lose his popularity with Tea Party types even if it became known that he was friendly with the likes of David Duke, Hosni Mubarak, and Joseph Kony. Fast-forward less than a week, and Limbaugh declares his public support for Kony's terrorist organization, and, surprise surprise, the only people who criticize him for this were those who already opposed his worldview. The aforementioned commenter even hangs a lampshade on this trope.
Internet Backdraft: Extremely antitheist quotes will inevitably spark a debate between antitheists and those who deny that atheists can be fundamentalists, and the rest of the site. Usually with some variation of arguments on religion being the root of all evil.
Vocal Minority: While there is a definite liberal bias, the main reason conservative Christians appear to be targeted by FSTDT is because they tend to be a lot louder than other types of fundies. As stated on the main page, non-conservative and non-Christian fundies are fair game, but it would be a lie to say that there is no bias whatsoever.
Wangst: Oh so much. About half the quotes are guaranteed to have at least one comment summing it up as something like, "WAAAAH! Why won't you tolerate my intolerance?"