You don’t have to live in public
I tried very hard in that book, when it came to social media, to be platform agnostic, to emphasize that social media sites come and go, and to always invest first and foremost in your own media (website, blog, etc.) and mailing list.
I still stand by that advice, but if I re-wrote the book now, I would encourage artists to use much more caution when it comes to using social media websites like Facebook, Twitter, and Instagram.