Absolutely! In fact, as an Fun.Money (FDM) Member, you can earn up to 400 Rewardicals for each person you refer who signs up as a Member.
You can refer others to to your FDM Membership gateway URL. When someone signs up via your gateway, you will get credit for the referral.
You can also simply click the SHARE button on the Eager Zebra Games main page for the specific game you wish to share. A popup will provide a link you can share with your friends and earn Rewardicals as their referrer.