There are tons of ways to make money online. You can start a website, with a website up you can make money many ways from selling ads, selling links and more. As long as you have quality traffic and content you ca make money off your site with it.

Same goes with blogs. If you have a good blog with quality content and traffic, you can make money with advertise on blogs programs. With these programs, they will pay you for writing reviews for their clients who are working on seo. With seo, they will benefit by having links on your blogs with reviews about the link. This is great for both parties because you will get to earn money while they can help their serps. If you want to join these programs, you can join more than one if you wish since there is no limit to how many you do end up joining for your blog.