I scraped 3.8 million Substack posts.
Mapped word count against engagement.
Here’s what shocked me:
📉 Engagement drops off a cliff after 2000 words.
📈 The sweet spot? A juicy 1600.
After that, it’s just rambling into the void.
Oh, and one writer went for 119,496 words.
That's not a post. That’s war.