Social network sites can be used for learning in Bloom's Taxonomy stages of: remembering when locating, 'liking', or recognizing; understanding when subscribing or tagging; and evaluating when justifying a decision, collaborating or networking via the site ( Churches, 2009).

Many critics of Twitter believe that the 140-character microblog offered by the ubiquitous social network can do little for the education industry . They are wrong. K-12 teachers have taken advantage of Twitter 's format to keep their classes engaged and up-to-date on the latest technologies.

Colleges and universities are beginning to embrace social media and realizing the potential power and implications for using it as a component of their overall marketing mix. This guide will introduce you to some of the more popular forms of social media, including Facebook, MySpace, YouTube, Flickr, Twitter, blogs, and del.icio.us.