Most of what I know about marketing I learned by testing instead of arguing. I split-tested the email subject lines I had written by gut for years, found RSS quietly outperforming the social channels everyone was chasing, tightened a local gym's targeting until it stopped paying for the wrong audience, and turned a B2B company's customer questions into its best channel. I also could not stop reading about brands that pivoted 180 degrees from their first idea, or the 35 startups that changed their names and lived. Here are the articles from that.

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