This is a "Wild Mass Guess" entry, where we pull out all the sanity stops on theorizing. The regular entry on this topic is elsewhere. Please see this programme note.
Drama Drama Duck
The community actually exists somewhere out there on the internet! It's just that none of us have found the real one yet (or if we have, we aren't telling).
How I Became Yours takes place in DDD!verse. All OO Cness is the cause of viruses. Zuko's daughter in the sequel is inexplicably named Lilith because of his being close to that Lilith on the community.