You can advertise. Say, $1-$5 per click (I'm not an expert). It won't really pay off (in terms of value per user), but it will give you feedback. It won't scal

You can advertise. Say, $1-$5 per click (I'm not an expert). It won't really pay off (in terms of value per user), but it will give you feedback. It won't scale as well as word-of-mouth / viral adoption, but that's a premature optimization issue.