This document defines and provides links to Wikipedia articles about common online terminology including email, wikis, social bookmarking, HTML, podcasts, VoIP, online chat, the World Wide Web, streaming media, social networking, URLs, blogs, and web feeds. It explains that email exchanges digital messages, wikis allow collaborative editing, social bookmarking shares bookmarks, HTML creates web pages, podcasts are episodic audio/video files, VoIP makes phone calls over the internet, online chat provides real-time text messaging, the World Wide Web links hypertext documents, streaming media is continuously delivered multimedia, social networking expands business/social connections, URLs uniquely locate files, blogs are reverse chronological discussion sites, and web feeds