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If you're anything like me, seeing your favorite AI model use Reddit as a source causes some anxiety. The site is hardly a beacon of reliable information. Yet $RDDT is an extraordinarily interesting company from a financial perspective. It's a fast-growing business whose revenue grew 69.4% over the last year.

But here's what the financial press is missing: Reddit is the cheapest mass advertising platform on the planet. And since 93.64% of the company's revenue comes directly from advertising, understanding Reddit's advertising business isn't just important. It is the entire story.

Let me walk you through the deepest possible analysis of Reddit's advertising economics, its unique community-targeting capabilities, and why recent data access restrictions may undermine the asset that makes the company's advertising business so valuable.

Before we dive into the cost-per-advantage analysis, let's establish just how dependent Reddit is on advertising. This isn't a diversified business. It's an advertising business with a side gig in data licensing.