Note that I did post about it twice (https://news.ycombinator.com/item?id=22589339 https://news.ycombinator.com/item?id=22589339 and https://news.ycombinator.co

Note that I did post about it twice (https://news.ycombinator.com/item?id=22589339 https://news.ycombinator.com/item?id=22589339 and https://news.ycombinator.com/item?id=22743353 https://news.ycombinator.com/item?id=22743353) in the past, when the promo was ongoing, and those posts didn't front page. And I admit, it's not just "make something free and sales go up"—I've probably spent more time during this lockdown working on tying together social media + YouTube videos + book marketing, once I noticed the uptake on the free offer. The strangest thing to me? The 'ignition point' for going from a few hundred to multiple thousand copies of the book being given away in just a few hours was a LinkedIn post that was shared pretty heavily. LinkedIn... seriously!