Viral marketing Typically, my tweets on Twitter receive around 0–1 replies, 0–2 ‘Likes’, and 0–1 ‘Retweets’. Then, last night, I tweeted the following: Hey, @BorisJohnson, just wondering… Have you fired Dominic Cummings yet?— Friends of Darwin - @email@example.com (@friendsofdarwin) June 6, 2020 If only I’d thought to include a shameless plug for my book at the same time! Schoolboy error. Richard Carter A fat, bearded chap with a Charles Darwin fixation. View all of Richard Carter's posts.