With referrals, you will receive earnings whenever a visitor to your site clicks one of your referral ads and performs a specific action defined by the advertiser. Common actions that an advertiser might select could be signing up for a newsletter or purchasing a product.

For example, Firefox with Google Toolbar is a referral product that we offer for publishers today. We have defined a download and installation of Firefox with Google Toolbar as an action. When a visitor to your site clicks one of your referral units showing Firefox with Google Toolbar, downloads the product and installs it on a computer for the first time, you get paid up to $1 for the completed action.