flickr.com / Rich Slim
First of all, you need to know exactly how bloggers make money. Bloggers earn their income by allowing advertisers to place advertisements on their blogs, which brings in more money depending on the amount of traffic the website receives. The more people that visit the blog, the more people see the advertisement. With every person that sees the advertisement, the blogger makes a few cents. This adds up and soon turns into dollars a day, and only increases from there as long as the blogger continually updates the content on their blog.
To have a successful blog you need to write about something that people are interested in. This means that you cannot use your blog as a journal of your life, because not a lot of people are interested in how a stranger’s life is going. The topic you choose is very important, and should be well-researched before you begin. Try using a tool such as Google AdWords to determine how popular certain topics are, along with how much competition various topics have.