is a type of website , usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video
can also be used as a verb, meaning to maintain or add content to a blog .
Many blogs provide commentary or news on a particular subject; others function as more personal online diaries . A typical blog combines text, images, and links to other blogs, Web pages , and other media related to its topic. The ability for readers to leave comments in an interactive format is an important part of many blogs. Most blogs are primarily textual, although some focus on art (), photographs ( photoblog ), sketches ( sketchblog ), videos ( vlog ), music ( MP3 blog ), audio ( podcasting ), which are part of a wider network of social media . Micro-blogging is another type of blogging, one which consists of blogs with very short posts. As of December 2007, blog search engine Technorati was tracking more than 112 million blogs.  With the advent of video blogging , the word blog has taken on an even looser meaning — that of any bit of media wherein the subject expresses his opinion or simply talks about something.
is a website that allows multiple users to create, modify and organize web page content in a collaborative manner.
a collection of Web pages designed to enable anyone with access to contribute or modify content, using a simplified markup language. Wikis are often used to create collaborative websites and to power community websites. The collaborative encyclopedia Wikipedia is one of the best-known wikis.
Wikis allow students to experience the flat world of horizontal connections and contributions (Sharreski, 2006). Allowing students to interact with the material and create their own ideas foster an increased interest in and understanding of the material. Students today have grown up to be very comfortable with and speaking the language of technology (Mader, n.d.). Students expect a learning environment that supports multitasking and collaboration. Rather than bemoaning the fact that students no longer wish to learn in a structured linear fashion, it is our job as educators to learn to speak the language of the student and adapt to tools that foster a sense of contribution and collaboration.
What students need to learn is how to write effectively online (Pease, 2007). This includes the ability to design websites, blogging, and contributing to wikis. Students are motivated to write online because of the potential for an audience beyond their classroom teacher (McPherson, 2006a). Writing online also encourages students to view the writing process as a social process rather than a solitary one. Writing online in a context such as a wiki requires that students learn not only writing skills but also how to negotiate, cooperate, and collaborate. In addition, while writing online students also can model good writing skills to one another and learn to respect another person's thoughts and ideas. In addition, the use of a wiki allows more latitude for student creativity in the content of their writings - in a wiki students can add hyperlinks and video content that is unavailable to them in traditional written work.
"a digital recording of a radio broadcast or similar program, made available on the Internet for downloading to a personal audio player," but the generally accepted definition has expanded to include video as well as audio. Originally derived from a combination of "broadcasting" and "iPod.