evidence: Things are heating up in the highly-strung world of microblogging. Following Thursday’s launch of Meta’s Threads app, which has long been positioned as a rival to Elon Musk’s Twitter, about 30 million accounts have been created for the new service – that’s quite a feat in just one day and provides a decent springboard to achieve meaningful scale. The ultimate goal for Mark Zuckerberg, Meta’s chief, is to achieve more than 1 billion Threads accounts – Twitter has around 400 million active users. And it seems Twitter regards Threads as a real threat, as the Twitter legal team has written to Zuckerberg threatening to sue Meta, claiming it has "engaged in systematic, willful and unlawful misappropriation of Twitter’s trade secrets and other intellectual property," according to a letter seen by online news outfit Semafor. For the full story, see this Guardian article.