DSpace aims to enable people to find, collect, edit, structure and share any kind of information in a real-time, massive-collaboration, augmented-reality-environment (like wikipedia), based on a very common ground: The map of the area, where people actually are, around their Geolocation.
call-out can display a name/label, icons, highlights
UI could offer turning them all on/off or showing single on focus & mouse over
libs