The online communication medium is indeed much different than real world interaction, for many obvious factors, such as the suspension effect of leaving messages, stalled perception of people on chat until next you speak with them again, or the lack of proper emotional portrayal and other such misconceptions or proper comprehension of intended interaction, due greatly because of the restrictions it imposes.
Until you really get to know someone online, I guess it does make it “like” another universe, although on the other hand, since you’re free to come and go at will, that way of looking at it may direct it back a lot more to what it is, an alteration or differing means of communication rather than anything else, kinda like telegrams, telephones and today, the Internet. Efficient, accessible, but quite restricted when you consider real world interaction.
As for Fluther itself, well I do like and appreciate it here, and while I’ve experienced plenty of different online communities which varied greatly between one another, Fluther really isn’t anymore of a universe than the entirety of the rest of cyberspace and its prominent nature is.
For example I couldn’t have said all that in real life in two minutes, or if I would, it wouldn’t have sounded like that…so the perception of me as a being is slightly altered here on Fluther, but possibly not anymore than it was on AB, Assbook or CrapSpace.
I mean I say all the same stuff online and off, but in different ways, since online offers me the time to think about something and word it properly, instead of saying putin and sacrébleu every two minutes.
Of course if we spoke on chat, it may be different…yeah I just went on and on and on and really didn’t answer the question, but it’s too late now, sorry. XD
So to try and answer it on your terms, beyond the virtual aspect of online, it doesn’t really feel like a universe to me, if indeed, I’ve correctly understood the context in which you present the universe issue. And the reason why is, well, all that crap I typed above. XD