David Pierce writes: “For the last two decades, our social networking and social media platforms have been universes unto themselves. Now we may be at the beginning of a new era. Instead of a half-dozen platforms competing to own your entire life, apps like Mastodon, Bluesky, Pixelfed, Lemmy, and others are building a more interconnected social ecosystem. In a vastly more open and decentralized world, how do the posters post? The answer, I think, lies in a decade-old idea about how to organize the internet. It’s called POSSE: Publish (on your) Own Site, Syndicate Everywhere.”