Communications services; providing communication links to a global computer network; providing communications links to a portal service; providing communications links to public and private networks; services relating to data transmission communications; electronic transmission of data via global, public and private computer networks; electronic mail services; electronic messaging services; video conferencing services; providing access to virtual facilities for on-line interaction among computer users; communications services provided by interactive digital systems; electronic bulletin board services; wireless communications services; provision of access to the Internet; provision of user access to a portal service; providing user access to a global computer network; the provision of all these services on-line, including via a global communications network