I don't like spoiler tags at all, but I can certainly see the point Complich was making. Wanton use of spoiler tags would make reading threads really annoying; I have witnessed this often enough over at some subbers' forums, where everything that concerns the plot and certain details of the episodes have to be in spoiler tags.

So, if there weren't really strict rules, it would mean new people especially might place all episode discussion in spoiler tags, because if you haven't grasped the traditions of this forum, that could seem logical. And then people only trying to avoid speed sub discussion would also skip those posts even if they didn't contain any speed sub spoilers but just normal current ep details.

Moderating this kind of thing would be really hard. But of course, in the end, such use of spoiler tags wouldn't actually hurt the threads, only cause people to skip posts automatically.