Twitter will allow publishers to charge users on a per-article basis, according to CEO Elon Musk. This will offer a new revenue stream for publishers and enable users who do not sign up for monthly subscriptions to pay more for an occasional read. Details of the charges have not been released, but non-subscribers could end up paying significantly more for reading news stories and articles via Twitter. The development is part of Twitter's plan to monetise its platform and diversify revenue streams.