Providing temporary use of on-line non-downloadable cloud computing software accessible through a browser or a stand-alone software application, which computing software enables users to interact with each other, namely, to view and download files and pictures and transmit and receive electronic messages, and enables personal or shared database management, scheduling, calendaring, relationship management, buying and selling of goods or services, making reservations or bookings, and for sharing with other software users such purchase, scheduling, booking and messaging information, as well as sharing pictures, and electronic files