@wogan hmm, okay. Could fake it by creating as many dummy nodes as there are users on an instance though, wouldn't really matter.
Unless I would want to graph users who are active on several instances. Not that there is any way I knowing that (yet) though.
@lateral Not cleanly, no - there's no APIs for those yet. You can pretty much only see who's on an instance by interacting on it (or owning it).