Computer software for instant messaging, sending and receiving emails and contact information, schedule sharing and contents sharing service; computer software for personal information management; computer software for use in recording, organizing, transmitting, manipulating, and reviewing text, data, audio files, video files and electronic games in connection with TV, computers, music players, video players, media players, mobile phones, and portable and handheld digital electronic devices; computer software to edit daily activities, address book, calendar, memos, and multimedia contents stored in mobile devices; computer software to enable authoring, posting, uploading, downloading, transmitting, receiving, editing, extracting, encoding, decoding, playing, storing, organizing, showing, displaying, tagging, blogging, sharing or otherwise providing electronic media or information over the Internet or other communications network; computer software to enable users to program and distribute audio, video, text and other multimedia content, namely, music, concerts, videos, radio, television, news, sports, games, cultural events, and entertainment-related and educational programs via communication network