I know three separate communities of varying technical prowess who have ended up on Google+ and seem to be functioning quite happily (Members of the open data/o

I know three separate communities of varying technical prowess who have ended up on Google+ and seem to be functioning quite happily (Members of the open data/open governance community, an extended science fiction community featuring some rather well known members such as the authors of the Expanse and SMBC, and folks like Yehuda Katz). Every last one of these people is based in the USA.