I'm unclear on what counts as worldbuilding. What about:

• Stories that take place in the world of Equestria, and are compatible with what we know of it, but in distant times or places that are quite different from what's seen in the show. (Cold in Gardez' "The Carnivore's Prayer", Chris' "Wyrmlysan")
• Stories like GhostOfHeraclitus' "Whom the Princesses Would Destroy", which take place in the Equestria we know, but build a sub-culture within it.

6345935 I think you have to add directly from the story if you're doing others' stuff. Unless there's something about group permissions I'm unaware of.

6345997 Oh, right. I used to know that. Thanks.

I'm going to modify the thread name and my initial comment to just ask the second question.