Why blog became Popular?

Lately blog inde to trend just in the world maya, what blog..??Blog is the site that is personal that his form like the journal, why blog became popular..???The contents from blog that is personal made blogger could be free to express himself, in his development blog only did not become the diary or curhatan adri blogger, but also now could become the business land, day after day the number blogger increasingly increased, is support with even more of them the service blog free diinternet.