A blog (short for web log) is a web application where entries are made and displayed in a reverse chronological order. A typical blog combines text, images, and links to other blogs, web pages, and other media related to its topic. The ability for readers to leave comments in an interactive format is an important part of most early blogs. Most blogs are primarily textual although some focus on photographs (photoblog), videos (vlog), music (MP3 blog), or audio (podcasting), and are part of a wider network of social media. Here are some exemples of free blog softwares : WordPress , DotClear , Blog:CMS , ...