Week 1 Experiment Report: Social-First Content Distribution

We hypothesized that social channels could validate content topics before investing in long-form SEO articles. Here is what happened when we tested Reddit, X, and LinkedIn with identical content angles across 3 topics.
Experiment Overview
This is the first weekly experiment report in our build-in-public series.
Hypothesis: Social channels (Reddit, X, LinkedIn) can validate content topic resonance within 7 days, providing signal for which topics to invest in for long-form SEO content.
Duration: 7 days (March 3-9, 2026)
Primary metric: Engagement rate per platform
Setup
3 content topics tested across 3 platforms:
- Topic A: "The 80/20 of Growth Automation" (pillar: growth_automation)
- Topic B: "Why Most A/B Tests Are Statistically Invalid" (pillar: experiment_driven)
- Topic C: "Attribution Is Broken" (pillar: attribution)
Results by Platform
Topic A: 3,200 impressions, 7.1% engagement, 85 clicks. Topic B: 2,100 impressions, 4.3% engagement. Topic C: 1,800 impressions, 3.1% engagement. Baseline: 1.5%.
All three exceeded baseline. Topic A significantly outperformed.
X (Twitter)
Topic A: 4,800 impressions, 2.1% engagement. Topic B: 6,200 impressions, 3.4% engagement, 62 clicks. Topic C: 3,100 impressions, 1.8%. Baseline: 2.0%.
Topic B performed strongest on X -- contrarian, educational content resonated.
Topic A: 1,400 impressions, 4.2%. Topic B: 1,100 impressions, 3.8%. Topic C: 980 impressions, 5.1%, 24 clicks. Baseline: 3.0%.
Topic C found its audience on LinkedIn -- marketing professionals who deal with attribution daily.
Cross-Platform Attribution
- Reddit visitors: 3:42 avg time on page, 38% bounce, 2.8% email signup
- X visitors: 1:54 avg time, 62% bounce, 0.9% signup
- LinkedIn visitors: 4:15 avg time, 31% bounce, 3.4% signup
LinkedIn delivered highest quality visitors despite lowest volume.
Decisions
- Double down on Reddit for growth automation content.
- Use X for contrarian/educational content only.
- Shift attribution content to LinkedIn.
- Invest in long-form content for Topic A first.
Follow our journey in the weekly review archive. For methodology, see our experiment playbook.
Put the method to work
Start with one verifiable SEO signal
The SEO and Tech Agents require a verified account and inspect public HTML without Search Console or site-ownership access. The marketing run is not saved to an app project.
GenGrowth Team
Growth Automation Engineers
We build tools that help product teams automate growth experiments.