A blog is an electronic platform that you can use to write articles regarding your personal life, social life, politics or any other information which you would like to share. The best part of a blog is about comments. Your readers can comment on your article and you can find new things about your discussion topic or you can start a new topic for the further article.
With your blog you can advertise very easy. This kind of internet promotion is very efficient, because blogs have a more dynamic nature compared with other kind of web sites. So, a blog article is indexed faster by searching engines(Google ,Yahoo, Bing, Ask, Alta Vista, and many others).
The blog functionality is given by the possibility of creating articles, without requesting technical knowledge from their users.