Most probably target.
Went in promotions tab. $15 credit for completing survey.Check your email for more details
$10 for referrer & referee, if referee applies for account within 14 days of invitation and completes a transaction within 14 days of account approval. Those wanting a referral should PM users their email or phone number, to be sent an invite. You may like to PM a few members to avoid waiting. Users receiving a PM for a referral should send an invite to that member's email or phone number. Once you have received an invite, you won't be able to be invited from other members.