Blog

I think blog is really big power for our life.
In Japan, a lot of famous people are doing blog and get fans.
How about american famous people? are they doing blog?

Anyway, even if you are not famous people, a lot of people are doing blog right?
In Japan, some people are making good blog and get a money by it because of advertising.
Some company ask to attach their advertising on famous blog, and they pay to bloger.
Is this common in america?