Plum District, another daily deals site, now is your time! They are offering a limited time promotion of a $10 credit for all new referrals (for the first 10,000 referrals). So definitely head over here and sign up! (you can use the credit later, but sign up now so you get it!)
If you're already a Plum District member, check your email to see if you got this deal, and then start inviting your friends! You earn $5 when every new referral makes their first purchase!