An article on a blog can be used for a number of different purposes. A blog can be used as a personal diary, where the author writes about their life and their thoughts. A blog can also be used as a source of information. A blog can be used to write about current events, or to write about things that are of interest to the author.
A blog can also be used as a way to share opinions, or to write about ideas that the author thinks are important. A conclusion about using a blog for different purposes would be that a blog can be used for many different purposes, and that the purpose that a blogger uses their blog for is up to them.