The term “blog” is slang for “web log.” Wikipedia defines a blog as “a web site where entries are written in chronological order and are commonly displayed in reverse chronological order.” The word can also be used as a verb, meaning to maintain or add content to a blog. To get a feel for the wide use of blogs, consider the following: In September 2007, blog search engine Technorati tracked more than 106 million blogs. Some notable corporations that use blogs are HP, Google, Microsoft and ImageWorks Studio.