Any entry onto this page is evidence that TVTropes is ruining DokEnkephalin's life. They warned me it would cause cancer.
I'm up to 87%. I weep for my immortal soul.
Alright, now. Two things that bug the everliving shit out of me enough to declare jihad:
Gratuitous spoiler tags: If it happened in the first episode, or the first 1/4 of a movie/game, it's not a spoiler, it's the premise. If it's revealed about a character in their first episode or encounter, it's not a spoiler, especially if it's their only appearance. If it appears in the trailer or promo shots or OP or Next Time On, it's not a spoiler. If it's described so obliquely that only someone who has already seen it would understand, then it's not a spoiler; that is the ideal way to add the entry anyway.
Abused spoiler tags: Adding spoilers that aren't even an example of the trope it's listed under. Tacking on spoilers to an example that sufficiently illustrates the trope without giving away anything. And a combination of both: Following up an appropriate trope example with a spoiler tangential or completely irrelevant to same trope. And an example that stands in a class by itself: consistently spoiler-tagging a detail that would mean nothing unless it were given significance by waving the spoiler flag over it.
If You Know What I Mean: Heh, heh. Heh, heh. You're so goddamn clever, you couldn't think of one of the hundreds of available Sex Tropes more specific to Pot Hole? Over-reliance on this makes you look like a prepubescent cretin who doesn't actually know what you mean.