The main threads are for discussion about what you've seen on an episode.
The "Spoiler/Spec" thread is for talking about anything you haven't seen on the show. That includes spoilers, speculation, rumors, and promos -- including in-show promos for next week and anything having to do with songs sung in future episodes.
If you really must discuss something like that outside of the "Spoiler/Spec" thread, it belongs in spoiler bars.
Edited by TWoP Gadget, Oct 10, 2011 @ 9:15 AM.