$0 to $150 MRR in 10 days by rewriting one sentence

Three weeks post-launch, PostClaw sits at 58 signups and 5 paying customers — $150 MRR. Ten days ago it was zero. What flipped the switch wasn't a feature ship, a Product Hunt spike, or a paid campaign. It was a headline swap and a 30-second screen recording, both zero-cost, both shipped in an afternoon. That's the case worth studying today, because the operator collected cleaner before-and-after numbers than most founders ever bother to.