Topline X, the social media site formerly known as Twitter, announced it would begin rolling out a peer-to-peer payment service similar to Venmo or PayPal this year—a feature the social media site’s billionaire owner Elon Musk has long pushed as part of his plan to develop an “everything app.” The social media company said the service will be part of its push to become an “everything app.”© 2023 Bloomberg Finance LP Key Facts X officially announced the new feature in a blog post, touting the new...