If you’re interested in learning about blogs, wikis, RSS and other web tools and social media, Common Craft produce popular videos that are fun to watch and aimed at simplifying seemingly challenging and rapidly evolving web technologies.
[kml_flashembed movie="http://www.youtube.com/v/NN2I1pWXjXI" width="425" height="350" wmode="transparent" /]
Social Networking in Plain English