yup, someone else set up a website for a tournament, but almost no one registered there (you can see the topic in the "Tennis Elbow Online" forum, in which this topic will move soon too !
In these days, there are about 10 regular online players.
During the summer holidays, it was up to about 20.
And one big problem will be the ping : it'll be hard to play for players very far from each other.
If you want to give a try anyway, I'd advice you to launch your site around next January 20th. With the Australian Open, it should have more players willing to try the game...