User blog comment:Jkphantom9/UGGGGGHHH!!!! SPOILERS!!! rant/@comment-10380701-20131018000211/@comment-6830001-20131018013530

Spoilers actually can't be shared 30 minutes BEFORE the episode airs for general public (it corresponds to the time of registered users' airing)...

It's said in the spoiler policy which can be found in the "community" tab in the navigation bar...