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How do vendors calculate Gravity?
ClickBank calculates Gravity for a product using a specific algorithm that measures the performance and popularity of the product based on the actions of affiliates. Here’s how the Gravity score is determined:
Gravity Calculation Breakdown:
- Unique Affiliates Making Sales:
- Gravity is based on the number of unique affiliates who have made at least one sale for the product in the past 12 weeks. The more affiliates promoting and successfully selling the product, the higher the Gravity score.
- The algorithm tracks each affiliate’s sales activity, counting only one sale per affiliate, which means that multiple sales by the same affiliate do not disproportionately increase the Gravity score.
- Frequency of Sales:
- Gravity also takes into account how frequently affiliates are making sales. A product that is consistently being sold by many affiliates will have a higher Gravity than one that is only occasionally sold by a few affiliates.
- The Gravity score increases as affiliates make more sales within the 12-week period.
- Decay of Older Sales:
- Recent sales are weighted more heavily in the Gravity calculation. The more recent a sale, the more it contributes to the Gravity score.
- Older sales (sales made further back within the 12-week window) contribute less to the score. This ensures that Gravity reflects current performance and trends.
- Impact of High-Selling Affiliates:
- If one affiliate makes many sales over a period of time, their activity will still contribute to the Gravity score, but the impact of one super-successful affiliate is limited. This prevents a single top performer from disproportionately increasing the score.
- The Gravity score is designed to reflect the number of successful affiliates rather than the total number of sales. So, a product with many affiliates making a few sales each will have a higher Gravity than one with a few affiliates making a large number of sales.
- Formula Adjustments:
- The formula ClickBank uses to calculate Gravity is proprietary and adjusts for decay over time, meaning sales made early in the 12-week period will have a smaller impact than sales made toward the end of that period.
- The formula penalizes any outliers, so very large sales by a single affiliate will not cause the Gravity score to spike artificially.
Key Takeaways on Gravity Calculation:
- Number of affiliates making sales in the last 12 weeks.
- Frequency of those sales and how recent they are.
- Diminishing returns for older sales (sales made further back in the 12-week window are less impactful).
- The focus is on affiliate success rather than total sales volume or individual affiliate performance.
Example:
If 100 different affiliates each make one sale of a product within a 12-week period, the Gravity will be higher than if only 5 affiliates make 100 sales each. Gravity reflects the number of unique affiliates making sales, which indicates that the product is widely promoted and has broad appeal.
