Have you ever wondered exactly how ClickBank calculates the "gravity" number it displays for each item in the marketplace? The ClickBank website explains that gravity is the:
"number of distinct affiliates who earned a commission by referring a paying customer to the publisher'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."
Okay, that gives you a vague idea. Let me explain exactly how it's calculated.
When an affiliate makes their first sale of a product, ClickBank adds 1.0 to the gravity score for that product. If they make another sale (or any number of additional sales) on the next day, ClickBank continues to add 1.0 to the gravity for that affiliate. If on the other hand, that affiliate doesn't make another sale on the next day, ClickBank adds only 0.96 to the gravity for the product for that affiliate.
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