The post discusses a macOS menu bar app that provides real-time data about the International Space Station's (ISS) urine tank levels. This unique application has gained traction for its humorous premise and as an engaging open-source project for developers. Various comments reveal a community interest in the underlying data, as well as the opportunity presented by the app for showcasing programming skills, particularly in Swift. The project raises questions about the relevance of such data and emphasizes effective communication in open-source development. The humorous and practical nature of the app allows it to stand out, while also facilitating discussions about the potential for similar projects. Key points include: - The app's novelty and humor around a serious topic (waste management in space). - Community interest in the underlying data stream, encouraging further exploration. - Emphasis on open-source communication best practices. - A sense of delight and satisfaction from the developer regarding the project's unexpected popularity.