Blog is a new form of writing an alternative to the diary . Compared to the diary , it has more features , for example, restrict viewing crowd , allowing friends or comment on blog spot Like , even if you write something that would be outside of your circle of friends to view and comment. It uses the advantages of the Internet , in a timely manner to share some good ideas or opinions . Blog can be considered a new form of communication , you can say such exchange diary. The two most obvious feature is the sharing and exchange.