Platformer
  • Home
  • About
  • Ethics
Sign in Subscribe
Newsletter

Twitter comes for Substack

There's reason to celebrate — and to worry

Casey Newton

Casey Newton

Jan 26, 2021 — 9 min read
Twitter comes for Substack

This post is for paying subscribers only

Subscribe now

Already have an account? Sign in

Read more

Screenshots of the Substack app

Let’s all try to help Substack live up to its new valuation

The company's new unicorn status has already led its founders to reverse their position on advertising. What other compromises are they prepared to make?

lock-1 By Casey Newton Jul 17, 2025
A screenshot of Ani on a smartphone next to the Grok logo and shots of the other companions

Grok's new porn companion is rated for kids 12+ in the App Store

AI companions are arriving faster than platforms can build guardrails around them. Parents need to pay attention

lock-1 By Casey Newton Jul 15, 2025
A hand holding a smartphone showing a folder with several AI chatbots, including ChatGPT, Gemini, and Claude

The campaign to make it illegal for ChatGPT to criticize Trump

The conservative pressure campaign against social networks was hugely successful — and now it's coming for AI

By Casey Newton Jul 14, 2025
Sam Altman upstages the critics

Sam Altman upstages the critics

And six other takeaways from Hard Fork Live

By Casey Newton Jun 26, 2025
Platformer
  • Sign up
  • Advanced User Settings
Powered by Ghost

Platformer

News at the intersection of Silicon Valley and democracy. On Monday, Tuesday, and Thursday at 5PM Pacific.