@jalefkowit Absolutely. Instance and Topic/community of interest are different levels of abstraction. In the same way that NNTP server and newsgroup or SMTP server and mailing list or IRC server and channel are different levels.
@jalefkowit This seems completely obvious to me that there's a hierarchy of Instance, multiple Groups, each with multiple Threads. I don't really understand why this is in question.
@jalefkowit And yes, absolutely, one identity per topic/community of interest is absurd.