Yes, usability testing is indeed a skill. It requires a deep understanding of various testing methodologies, user behavior, and UX principles. Usability testing also demands strong analytical abilities to interpret data and derive actionable insights. Moreover, excellent communication skills are needed to effectively share findings and recommendations with different stakeholders. This skill can be developed and improved over time with experience and practice. It's a crucial part of many roles within the tech industry, particularly those focused on user experience and product design.