Web+2.0+Definitions

The term Web2.0 refers to the new generation of web based services and communities characterized by participation, collaboration and sharing of information among users online. Web2.0 applications include wikis, blogs, podcasts, and other social networking sites which encourage user-generated content (USG) and social interaction online.
 * Web 2.0 Technologies and Definitions **
 * Web2.0 **

A wiki is a collection of web pages designed to enable anyone who accesses it to contribute or modify content, using a simplified markup language. Most often a wiki is devoted to a particular topic or subject.
 * Wiki **

A blog (short for weblog) is a personal online journal that is frequently updated and intended for general public consumption. Blogs are defined by their format: a series of entries posted to a single page in reverse-chronological order. Blogs generally represent the personality of the author or reflect the purpose of the Web site that hosts the blog. Topics sometimes include brief philosophical musings, commentary on Internet and other social issues, and links to other sites the author favors, especially those that support a point being made on a post. The author of a blog is often referred to as a blogger. Many blogs syndicate their content to subscribers using RSS, a popular content distribution tool.
 * Blog **

A podcast is a series of audio or video digital files which is distributed over the internet by syndicated download through web feeds.
 * Podcast **