A nice introduction to social media.

How many times have you found a great website and wanted to share its immense value with others?
Welcome to Social Bookmarking and Tagging, the powerful practice of adding URLs into a social content
website and ‘tagging’ them with familiar keywords.
Creating a collection of Social Bookmarks is easy. Simply register with a site such as
http://www.delicious.com, www.stumbleupon.com and [...]