What is a blog
A blog is a web page that contains brief, discrete hunks of information called posts. These posts are arranged in reverse-chronological order (the most recent posts come first). Each post is uniquely identified by an anchor tag, and it is marked with a permanent link that can be referred to by others who wish to link to it.
That’s what a blog is, but not what it’s for. A blog is a means of communication, and there are many different types of messages carried by blogs. Some are nothing but pointers to other web sites, while others run long essays; some are personal diaries, others feature technology; some are edited by one person, others by teams.