A/B tests that don't lie: when to trust the winner
A test with too few visits tells you what you want to hear. When a winner is real, why daily peeking ruins it, and the three rules to avoid fooling yourself.
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Why you lose conversions to iOS and blockers (and how to get them back)
iOS 14, ITP and ad blockers hide up to a third of your Meta and Google Ads sales. Here is why, and how server-side tracking gets them back.
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