In October 2024 I sat next to some smart Hertie School first year students during a talk, and learnt they'd never heard of the social network I was putting my best content on, bluesky. Given the political context of the time (just before the Harris/Trump election in the largest year of voting ever), I thought I should create an updateable blogpost. In fact, within four weeks I had 5 times more followers on bluesky, so now the original post (further below) seems an important relic of its time.