The term web-blog was coined by Jorn Barger in 97 to refer to an online journal that the author or authors constantly updated. Later, the two words "Web" and "log", compressed into a single, "Weblog" and then the last, became a very short: "Blog". In short, a blog is a Web site that provides instant publishing of entries (posts) and allows readers to give feedback to the author in the form of comments. Entries are organized chronologically beginning with the most recent. It is a website that collects chronological texts or articles from one or more authors, the most recent appearing first. Typically, in each article, readers can write their comments and the author to answer them, so it is possible to establish a dialogue. Use or theme of each blog is particular about personal, journalistic, business or corporate, technological, educational, etc. About a blog formed a community of readers. So, if we are in a blog about movies, it's easy to recognize among its readers the greatest cinema fans engaged in the network and a thousand debates. Moreover, many of those readers will turn the other blog editors and are likely to continue the stories they read in their own weblogs, although it should be noted that blogs are essentially different forums publishers are starting the conversation and define hence the theme and style of the site. This is a very important feature, a weblog is also the page where the creator (or creators) collected the most interesting of the literature on the Internet related to the topic that concerned, acting as a filter for your readers.