Computer services, namely, software-as-a-service services, application services provider services and cloud computing services, all featuring software for enabling and managing multiple modes of communication, namely, voice over Internet protocol, video conferencing, audio conferencing, computer desktop sharing, file sharing and telephony and accessing remotely stored data, all via computer networks, communication networks and the global information network; providing temporary use of on-line non-downloadable software and software applications for messaging and for enabling and managing simultaneous, multiple modes of communication, namely, messaging, voice over Internet protocol, video conferencing, audio conferencing, computer desktop sharing, file sharing, providing user presence information, and telephony, all via wide area networks, virtual private networks, local area networks and the Internet; hosting the computer applications of others; providing temporary use of online non-downloadable software, namely, virtual network, business or community software application for providing private or public spaces where users can teach and learn from each other