Login to your account. Click on the menu on the top right side of the site, and then clicking on “My Account”. Below the “My Bonus” section, click on the “Refer a Friend” option. Once there, you’ll be able to send your referral link directly to your friends e-mail addresses. You can also send them through your Facebook or Twitter accounts, or copying the link and sending it through other mediums. For the bonus to be added, your friend must sign up using your Referral link, and make a minimum deposit of $25.