Support WBURTired Of The Social Media Rat Race, Journalists Move To Writing Substack NewslettersPlay00:01Download AudioBobby AllynDecember 02, 2020 ShareSan Francisco-based Hamish McKenzie, Chris Best and Jairaj Sethi are the co-founders of the email newsletter platform Substack, which has seen its active writers more than double since the start of the pandemic. (Substack)