Providing the temporary use of non-downloadable, web-based computer software for offering, organizing and conducting interactive events via the Internet, namely, meetings, conferences, symposiums, seminars, trade shows, career fairs, educational programs, training programs, lead generation events and corporate communication, for providing webcasts and delivering live and pre-recorded audio-visual and multimedia content via the Internet, for creating and offering virtual office spaces, virtual community spaces or virtual educational spaces for the purpose of replicating a physical environment on the Internet, and for real time communication and collaboration among users in connection with each of the above