"A Spammer Gave Me the Perfect Test Suite for My Content Classifier"

Someone left 11 comments across my DEV.to articles. Every single one followed the same pattern: generic praise, abstract restatement of my article's thesis, then a pivot to their product. Four of them contained the exact phrase "I built [tool] for exactly this." Instead of deleting them, I fed them into my content classification pipeline. They became the best test data I've ever had. The pattern Here's what an astroturf comment looks like when you've seen 11 of them: Comment on article about git safety hooks: "Between bash-guard and git-safe, you're building a proper defensive layer around Claude Code. The 'suggests safer alternatives' approach is the right UX." Comment on article about token usage: "Point 2 is the most underrated on this list. The structured prompt approach directly addresses this." Comment on article about autonomous agents: "Cron-driven autonomous agents are great -- but the weakest link is usually the prompt. I built [tool] for exactly this." Same structure every t