The analogy was good... the USA and Canada are very, very similar... and there was a time when neither country was well-established...
Anyway, I am about to begin my first RP on my site, and I have a linkreferral.com posting for my site... it seems to be getting me some traffic. We would have to start over again on a single, new site... and given the time we have invested into each site so far, we are not going to do that... or at least, I don't see the need.
We already have some overlap in members as it is, and my base is starting to grow... it will take about six months for it to hit 50 at this rate, but that is fine with me...