The document summarizes a webcast about Rich Internet Applications (RIAs). It provides an introduction and instructions for participants, then covers the following key points: - RIAs allow software-like applications to run universally in web browsers, desktops, and mobile devices. - Popular RIA technologies include AJAX, Flex, Air, and Silverlight. - The presentation discusses five common "myths" about RIA design and user experience, including that RIA nature provides better UX and that web design skills directly translate to RIA design. - Effective RIA design requires understanding how applications differ from websites and how to apply user-centered principles.