The 答案 Feature is meant for FACTUAL 问题 only. I have seen other spots and it seems to me that the Twilight Spot is a perfect example for wrongly placed questions.
I'm just stating a concern and hope that i helped a small bit. Here is a great 文章 由 Cinders, from the 潮流粉丝俱乐部 Etiquette spot that does a great job explaining the 答案 Feature.
link
Thanks for listening to me rant :p