How a 3-Person Content Site Broke the SEO Ceiling by Triggering a Social Velocity Surge
https://stateofseo.com/why-seo-managers-who-bought-backlinks-but-saw-flat-rankings-keep-hitting-walls-with-stakeholders/
Short version: a small niche site with 120,000 annual visits ran a 60-day social velocity experiment and saw dramatic ranking changes that coincided with an algorithm recalibration in the wild