Do people monetize their own blogs? Why?

[Akihiro]

Hi, I have begun writing blog about my daily life and I saw monetize button on Google Blogger. I have also seen people who are writing about their lifestyle on blogs and linking blogs posts on Facebook Pages(to promote their site??).

My questions are following:

- I would like to know how monetize function on Google Blogger works.

- Do people normally advertise themselves (by including their lifestyle, howto-tips etc..) through social networking services?? If so, are they doing this to just to be famous on the Internet??

I also want to know what are the advantages of having Facebook pages and Facebook ads and the difference between those.

Since I am a tyro of blogging stuff, I would be grateful if you could answer this question.