On Sunday, analysis firm Citrini Research published a thought experiment on Substack that reads like a piece of fiction.

The 43rd president of the United States launched a Substack site Feb. 16 with a 1,500-word tribute to a predecessor.

Journalism is better when it’s backed by live markets,” Polymarket’s X account said in a post announcing the deal.

What started as a simple newsletter platform and Twitter alternative has grown to encompass videos and podcasts. But what it doesn't involve right now is ads. Instead, Substack makes its money by ...

Substack has allowed for the inclusion of Polymarket embeds into blogs since 2024, and the new update mostly seems like it will streamline the process. Notably, the prediction charts can now be added ...