Yea. For the real time part of it, which is the coolest part, it would need enough concurrent users to where when you connect from any major city you would see at least a few people broadcasting. This is somewhat why I added the message archiving, initially. So that it didn't seem like a barren, open zone of no broadcasting. But, I think that the archiving of messages is a good addition for other reasons, too, after the fact.

I do like the idea of focusing on launching at a single event, or location first. That's probably the most realistic and feasible way to go about it.