AndroidPolice.com has ads. The more popular a blog becomes, the more companies want to advertise on it and therefore pay to the blogger. This is one of the ways in which AndroidPolice earns money
People can also use blog to promote their business. For example, in the TV show “2 Broke Girls”, they had a website/blog to tell other people about their cupcake shop. People could order on it.
Because I’m just a student now, I don’t need to make money (at least that’s not my biggest concern). All I want to do is tell people my thoughts and idea, so I think that’s what I’m going to do with my blog.