Media blog was first popularized by Blogger.com, owned by PyraLab before Google.Com PyraLab by the end of 2002. Since then, many applications are open source dedicated to the development of these blog writers.

Blog has a very diverse functions, from a diary, media publicity in a political campaign, through media programs and corporations. Some blog maintained by a single author, while others by several authors,. Many weblogs also have the facility of interaction with the audience, like using the guest book and comment columns that can allow its visitors to leave comments on the contents of the published writings, but there is also the opposite or non-interactive.

Web sites that related to each other thanks to the weblog, or a total of a collection of weblogs are often referred to as the blogosphere. Whenever a collection of wave activity, information and opinions are very large recurring to some very controversial subjects or occur in the blogosphere, it is often referred to as storm blogstorm or blog.