Displaying advertisements is an excellent way to monetize your social network. By creating ad campaigns, you can determine exactly where your ads will appear, how long they will be displayed, and who they will be shown to. The key to generating substantial revenue from your social network is to create targeted ad campaigns. This means that you should make an effort to show specific ads to users based on their interests or personal characteristics (e.g. their profile information). To accomplish this, ad campaigns can be created for specific user levels and/or networks.More info: See KB article.