Usability issues refer to problems that hinder users from effectively interacting with a product or system. These can include confusing navigation, unclear instructions, or a cluttered interface. When usability is poor, users may struggle to complete tasks, leading to frustration and decreased satisfaction. Common examples of usability issues involve websites, software applications, and mobile apps. For instance, a website with small text and difficult-to-find buttons can deter users from exploring its content. Addressing these issues is essential for improving user experience and ensuring that products meet the needs of their audience.