A lot of the time, when someone asks about a storyline or for clarification on a plot point, like this one about Dark Souls 2 or this one about Infinity Blade, a lot of the time they immediately open up a debate about whether it is or isn't on-topic.
The debate reluctantly (usually) settles on "yes, it's on-topic". But since it's so hard to determine what is or isn't valid, how can we really define a "Lore Question"? Can we even? Or do we just have to trudge through the debate every time a new "Lore Question" is posted?