The document defines common online terminology such as email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, blog, social networking, URL, and web feeds. Email allows digital messages to be sent over the internet. A wiki is a website that allows collaborative editing. Social bookmarking services allow users to bookmark and share web pages. HTML is the language used to structure and present content on the world wide web. Podcasts are digital media files that can be automatically downloaded. VoIP delivers voice and video communications over the internet. [END SUMMARY]