This document defines and explains common online terminology such as email, wikis, hashtags, HTML, podcasts, online chat, VoIP, streaming media, blogs, social networking, URLs, and web feeds. Email is text messages sent over a network, while a wiki allows collaborative editing online. Hashtags are used to save and share bookmarks online. HTML defines formatting for web pages and podcasts are episodic digital audio files that can be subscribed to. [END SUMMARY]