I guess you can argue the semantics until you're blue in the face. In the end, all that matters is that people know what they're getting for their dollar.....or euro....or whatever. In the traditional sense, it's hard to conceptualize a city-building MMO since the definition has been created through role-playing and team-based games. I guess an MMO in my eyes, by its most basic definition, means lots of people are playing at the same time connected to the same server and any interactions happen in real-time. By that definition, it's an MMO. Very limited in MMO-llike (interactive) content, but MMO nonetheless.