I think it might help you Diablo to put a total number of registered and total number of online players at the logon and register screens?

There's something about looking at those that really makes someone want to register.

Other things like top players, newest players, richest players etc would be pretty cool too. Just thinking how you can entice people to register. Let's players would love more targets! Hahaha.

Although it's still a little early I'd be keen to start advertising the game somehow, admittedly it's a bit outside my wheelhouse though and I've no idea where to start with something like this.