Although this article isn’t related to any of the 12 Challenges so far, it’s on a subject I’m developing for a potential future challenge.In July 2021 Facebook sent me a cease-and-desist letter because I made a browser extension, Unfollow Everything, which helped people use Facebook less.Over the years, a number of developers who have also received cease-and-desist letters from Facebook have got in touch with me — so here’s a round-up of my advice.Disclaimer: I’m not a lawyer, and nothing in her...