Haha, most probably not.... eh?Will you make use of an affiliate system? so if you get new people to start playing you get a little real money in your pocket.
At least, if they do I'll start to register a load of fake email-adresses, and get that fake people to sign up for Utopia to earn some cash.
If, at all, they might consider to give you some other ingame-features for that, like "no ads for 3 days for each new player to get into the game" (but something that doesn't give you an advantage over other players).