to minimize fraud from users who may have large numbers of dummy followers who are either blatantly fraudulent or otherwise unresponsive in order to minimize this type of fraud a campaign may allow a user to forward a fixed number of coupons to different users rather than broadcasting hundreds or even thousands of coupons the user may be allowed to send only five or ten coupons in such a campaign the user may seriously consider who is going to receive the coupon when the user thoughtfully considers who may receive a coupon the user may select users that are most likely to redeem the coupon such a situation may minimize unwanted advertisements and may also raise the effectiveness of the campaign in the example game theory may suggest that each user may attempt to maximize the long term rewards received some embodiments may implement a cost to each user for giving a recommendation the cost may reflect the fact that an unwanted advertisement from a friend colleague family member or other person may degrade the relationship between the users thus a user may only transmit a recommendation when the probability that the recipient follows the recommendation multiplied by the reward the user receives is greater than the cost the simulation may be able to model the behavior of users under different campaign.