The Articles module allows you to post your articles to your Web site.  It includes features such as limiting who can submit articles to the Web site and who can approve articles by security roles, you may style the articles with several templates that are supplied or you can create your own using HTML and CSS.  You can separate your articles by category or display them on different pages of the Web site. 

The articles module is a great way to add content to your Web site which will improve your search engine rankings.