Wingify × Bag Servant
Wingify x Bag Servant, trust badge swap drives 72% conversion lift
72.05% increase in visits to affiliate partner sites
Guessing at trust signals to validated credibility lever
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Why it works
The case study earns its headline number with a specific figure, a stated confidence level, and a clear mechanism: swapping a Twitter follower count badge for a curated WOW badge. The negative results on other trust-badge tests are a candid addition that adds credibility and teaches a real lesson about context in A/B testing. The story is thin on customer voice but the test narrative is concrete enough to be repeatable.
Steal this
Include the failed variation alongside the winning one. Showing what did not work and why makes the lesson credible and the mechanism far clearer than a winners-only story.
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