Providing on-line non-downloadable software for event and meeting management, namely, software for creating spatial diagrams of event and meeting rooms and spaces; Providing on-line non-downloadable software for users to plan and edit floor plans for events and meetings; Providing on-line non-downloadable software for creating and editing seating charts; Providing on-line non-downloadable software for sharing guest lists and seating charts with guests of an event and meeting; Providing on-line non-downloadable software for event and meeting guest list management; Providing on-line non-downloadable software for users to indicate their arrival at events and meetings and for the dissemination of information to attendees about the event; Computer services, namely, providing a website in the nature of an on-line community for registered users to participate in discussions, form virtual communities, and engage in social networking services in the field of event planning