You could start giving away gold for free, but noone will come unless you tell at least one guy about it, but likely he will not believe you. So you need to tel

You could start giving away gold for free, but noone will come unless you tell at least one guy about it, but likely he will not believe you. So you need to tell several people, maybe hundreds if it's not easily accessed. But likely you just have a great product, and you are not willing to give it away for free, so it will take much more to attract people! And there is also timing, if for example Google or Facebook would launch today (in their original form) they would have a very hard time acquiring users.