In 2020, Arvid Kahl wrote a post about how he self published his first book at How I Self-Published Zero to Sold, a Bestselling Book on Bootstrapping. He then shared that post on Hacker News. The post hit #2 and led to a bump in traffic.
In June, 2021, his post Selfish vs. Selfless: Self-Promotion in Communities was featured on the Hacker News front page. He shared an image of the traffic increase.