Sorry, I tried keeping this running for a couple of weeks after 0.9.2 was out and in all that time ONE person connected, so I gave up on it. 0.9.3 is only a couple of weeks away so once that's out I'll try leaving my server running for a while again to see if there's much interest. I just figured having a central server was the only way players would find each other...
I think your two options are either just play yourself (run server & client on your own PCs... which unfortunately means you're playing against an AI that doesn't do much yet) or if you wanted to leave the server program running, you could post your IP in the forum in case anyone wants to join?