Cool!
I had some troubles with starting but now it works.
Its a cool system for highscores or also mmo games!
i will try a onlinegame only based on a mysql database
if it works, it would be a good alternative to the normal multiplayer games

EDIT:

my first test works with three different player models with no frame rate loss.
my test:
3 clients running with server on the same computer nearley
30% cpu usage by 3 GHz dual core.
i will try to reduce this to use more connections at one time but i am looking forward for better performance