Do I earn money for my referral's referral?

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I have come to realize about this today, so I would appreciate it if I would receive a response. myLot tells me I earn 25% of what my referral does, but is that 25% of only their discussion, or 25% of their TOTAL earnings, which includes their referral? If it is 25% of their total earnings, thats like getting 25% of 25% of their referral, right? So I get 6.25% of their referrals money or not? Thanks.