Substack co-founder Hamish McKenzie says that creators jumping ship from 'mainstream media' like Jim Acosta, Joy Reid and Mehdi Hasan are a big driver of the growth. By Alex Weprin Senior Editor ...
Substack, originally a newsletter service, says its app now has millions of users interacting with its creators. By Benjamin Mullin and Jessica Testa Substack began its life as a buzzy newsletter ...