What kind business in blog business?

There are so many people go to west in order to find gold. The gold fever make west so crowd. Some people from various nationally compete find gold. Not all miner get sufficient gold. Only one of hundreds miner could become rich. The remain of the miner got little gold.
However, some businessman who open a shop must get profit. The miner should by some necessities even they did not get a gram of gold.
I realize that some people can generate money without blogging. They provide blogging service to support the blogger need. The businessman must get benefit from that. Like the merchandize, they has low risk. Those business it:

1. Writing article
Some blog or website need article content. They hunt the article to the freelancer website or Craigslist. I heard some jobs offer one dollar for a 400 words article. They want 500 article for the blog.
For the expert a blog article is pricey. Some blogger dare to pay $20 for a 400 article

2. Domain name
Some blogger need domain name. They will find domain name to make their blog looks good. Some blog name that have been taken by people must be pricey whereas a domain rice is only ten bucks

3. Sell Links
Some blogger sell the links to new blog in order to lift the new blog page rank. The new blog must pay little dollar to the link sellers. Some blogger can get $ 1,000 a month with this. However, Google has update the search engine term and the link does not help new blog much.

4. Bookmarker
To raise the article popularity, some people ask someone to bookmark the blog such as delicious, yahoo buzz, digg, stumble upon, reddit, and else. They give 5-10 cents every bookmark. I thought is is a fake bookmarker.

5. Facebook pages
Some blog supposedly do not miss with facebook pages. They are some blogger who paid the facebook fans. After get paid, they click dislike on the facebook pages.

6. Selling e-book
Some blogger feel can help other blogger to raise adsense revenue with their tips. If they can increase revenue why they share to us? It is nonsense. They want to sell their book so they can get benefit from it.

7. Selling some software
They use software to manipulate the visitor so the company want to visit their blog. This is illegal way and you will be banned.

Some people just want to get profit fast so they cheat you to get more money.