It's official: Everyone can use Substack Notes now. This new feature from Substack, a newsletter platform, allows anyone with an account to share links, images, thoughts, and snippets from their ...

The Twitter versus Substack battle rages on, as the social media app seemingly continues to discourage promoting offsite ...

Twitter users reported being unable to like or retweet posts that linked to Substack on Thursday, a restriction that came one day after the subscription newsletter service released its own ...

The Twitter Inc. logo is seen behind an Apple Inc. iPhone 6s displaying the company's mobile application in this arranged photograph taken in New York, U.S., on Tuesday, Feb. 9, 2016. Twitter Inc. is ...