About Index & Thread
We study what people trust. And what AI repeats.
Index & Thread was founded by Jack Gierlich. Years spent studying Reddit taught us how people test claims in public. Today we map the claims AI assistants repeat about a category, trace where they formed, and help companies own the ones that decide the shortlist.
Jack Gierlich
I've been on Reddit for over 12 years. I've studied and participated in communities with very different rules and audiences. That's shaped how I think about showing up honestly on the platform.
I've watched thousands of brand interactions succeed and fail, and seen what the system rewards. That experience is what we bring to clients.
Platform Experience
Years spent studying how communities work
You learn what the system rewards and what it removes when you watch it closely for years. That deep exposure shapes how we approach every client engagement.
Large Professional Communities
Community Analysis
Long-term study of major professional subreddits. Specific communities are kept private to protect member trust and community integrity.
Cross-Category Reach
Different Audiences
Years spent watching busy communities closely. It shapes how we work with brands.
Why This Matters
Most agencies guess at Reddit. We don't have to.
Other agencies read Reddit's marketing guides and hope for the best. We've spent years inside the system watching what actually works.
We know what the system removes
We've watched thousands of posts disappear. We know exactly what triggers community and algorithmic action.
We know how communities decide
Years inside the system means we understand how norms form and what members actually look for.
We know what gets upvoted
We've seen millions of posts. We know what content earns attention in different communities.
We speak Reddit
We've been here for over a decade. We don't sound like marketers because we're not.
See what AI keeps from your positioning
Run the free Compression Test on your own copy. For the full picture of your category, order a Category Claim Map.