Tags are a type of metadata - keywords or terms that can be assigned to various pieces of written content, images or components that are used on a website in order to be indexed by search engines so end users who are browsing the Internet can search for and locate your content . The new core Tags component in 3.1 enables Joomla users to easily integrate tags for articles, images and other components. The host illustrates the basic functionality and common uses of the core tags component and discusses how to use tags while developing an extension. - See more at: http://www.cloudaccess.net/recorded-webinars/130-advanced-joomla-webinars/681-joomla-3-1-tags-webinar.html#sthash.0iuhX89T.dpuf