What is a blog?

A blog is a record of events recorded on a personal webpage. It can be accessed by other people who can leave comments on the entry. With your blog you can visit other blogs to leave comments for them. You can add friend's links and photos. It depends on the maker of the blog site to what can be added or done on the blog, but basically it's up to you. It is controlled by a person or group of people that know a password and can change the blog to suit them.