Meta, the social media empire formerly known as Facebook, rolled out a new product – it’s only a mobile app at this stage – called Threads. Thirty million-odd people signed up to it in the first day, including our very own PM Anthony Albanese. So what is Threads? Starting with the name, it was clearly chosen as a not-so-subtle dig at Twitter; Twitter threads, aka several tweets in a row, are a huge part of how users interact with it.