I know that some locations in Glitch are "instanced" -- which means that there can multiple copies of the location to limit the number of players present. For example, the Bureaucratic Halls are instanced. If you try to pack a crowd into a Bureaucratic Hall, you can't do it because people will go into different instances of the location.
So here's what I'd like to know: What locations in Glitch are instanced? How many people can be in one instance of these locations at the same time? Do instanced locations persist so that objects dropped in them by one player can later be found by another player? If I leave an instanced location and return shortly after, will I be returning to the same instance?