"Post short excerpts from your content and links back to your websites and we'll nonconsensually cram them into eyeballs of people who never asked to see them. It's a free, high-value traffic funnel for your site, bringing monetizable users right to your door."
Now, Facebook had to find a way to lock in those publishers. To do this, it had to twiddle. By tiny increments, Facebook deprioritized publishers' content, forcing them to make their excerpts grew progressively longer.
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