Gravity: 5 I5 _2 s5 G2 B. A! e; D* p$ f
Number of distinct affiliates who earned a commission by referring a paying customer to the vendor's products. This is a weighted sum and not an actual total. For each affiliate paid in the last 8 weeks we add an amount between 0.1 and 1.0 to the total. The more recent the last referral, the higher the value added.