The only way spoilers can be avoided is by avoiding the forums :/
Quite, but I doubt people would risk posting them knowing the mods would most probably end them. Mods are grumpy on a good day, in a case like this they get even more grumpy! Wouldn't want to annoy them any further. Premptive E-Cookie to mods reading this post, don't kill me please. When Skyrim was leaked it became spoiler central for ages. The most annoying thing is there is a whole section of the Skyrim forums dedicated for spoilers. Most people don't bother to search.