A blog is a document that saves documents and work that you have done also you can do different work for example if you have a special or personal things . For example the blog has a lot of widgets that people can manage the widgets has different contents. Another example is blogs have a dashboard that can see your settings and you can post what they want, also you can customize your settings. A blog you can do a lot of work and thats necessary. Thats what is a blog that people use blog or what a blog is.