Saw the news that there's a push by some folks (Bitcoin Mag and others) to create a Bitcoin emoji, and that reminded me of a fantastic four-part series on how emoji's get made and approved (complete with the podcaster going through the process himself), from the sadly-defunct "Welcome to Macintosh" podcast. In spite of the name, this particular series of episodes is OS-neutral, so it's totally safe for @siggy47 to listen to. The episode notes also contain links to more info.