Temporary use of non-downloadable software for use in facilitation of communications via computer networks; provision of a web-based interface for use in facilitation of communications via computer networks; communications services, namely, electronic transmission of data and documents among users of computers; communications via computer terminals; data communication by electronic email; information transmission via electronic communications networks; providing providing private and secure real time electronic communication over a computer network; telecommunications services, namely, personal communication services; transmission of information by electronic communications networks