I report all the spoilers to the mods. Always. However, this thread is also a warning to other users to stay away from said threads until they are taken care of. Before someeone takes care of it, we don't want other people to get spoiled. That's the idea. Hence spoiler alert.
Because that's not the only spoiler they posted, of that, I'm fairly certain. It was yet another case of people trying to have an interesting and thoughtful discussion (God forbid that here), pose questions, and then the cavalcade of fanboys and fangirls show up and got butthurt for whatever reason and felt the need to defend their show with dueling spoiler tags, to newbies that will never click them, mind you, and in the process also did some unmarked spoilers, as they are wont to do.
They consistently ruin every thread with this behavior.
They have scores and scores of spoiler-allowed threads, so they have no excuce and no reason to destroy myself and other new viewers' enjoyment for Durarara, by polluting all the other threads with these inconsiderate, unthinking actions.
That, and they're talking about stupid crap that isn't interesting. Are these people twelve? They've never seen boobs? Do we really need multiple threads talking boobs and glasses, and other such nonsense? The only boobs I'm concerned with are the people continuously ruining this folder.
If I go back into the thread, I'll get spoiled on more things because they spew spoilers like it's going out of style. That thread has been reported to the mods, and now some poor mod is going to have comb through a once-good thread and clean up these people's mess, because they don't ever learn. Not ever. It's the same people doing the same shit.