Something else to consider is the whole 'public scene' aspect -- I am much more likely to go to a scene in progress somewhere I know is part of the 'public grid' than I am going to be to page someone for RP so I can get a +meetme, or join a room from a list of rooms that I'm not sure is a private scene or what because it's all on a list and are you SURE that I won't be interrupting?
@faraday, I concur with this. And this was my experience on your game; I wandered into a few scenes, attracted some attention, and things went from there.
I think it's mostly just mind-set and preference. I don't always get invited to scenes when I start off on games, and that gets a bit frustrating. And there are games with nice grids that people don't RP on, for whatever reason, I don't know. Neither having a large Grid nor having no real Grid at all bothers me once way or the other, and I think I enjoyed Victorian Reverie's stages more than anything else.