The document discusses what makes a mobile website optimized for mobile. It notes that responsive design alone does not equal an optimized mobile experience, and that an optimized mobile site must consider user expectations of speed, interactivity modes, multi-device usage, and unknowns like location and connectivity. The document promotes optimizing for performance first to avoid poor performance negatively impacting ROI and user experience. It introduces Netbiscuits as a platform that can help develop and deliver optimized mobile websites across devices.