A very popular way to generate a good income without advertising anything is to add affiliate links to your content. They are simple links which do not annoy anyone. They can be added anywhere you like on the page.

How Does Affiliate Linking Work?
It works in a step-by-step procedure:

*  The first step requires you to become an affiliate. This can be done by a visit to the Online stores and signing up as an affiliate with the one that makes the maximum sense.

*  Next, write about the products on the affiliates site, just like a review or an article.

*  Link your site to the product at the store, with the use of your affiliate code in the link. This code allows the store to keep a track of the customers who visited the site from your link.

* Whenever a customer who visited the site through your link buys a product, you get a percentage of that product's price.

Now, imagine that you have thousands of visitors. Even if a small number of them buy a product, you would earn a huge amount of money.

Amazon: The Web's Biggest Affiliate Store
The most well-known and famous affiliate store on the web is Amazon.com. It has a wide range of products that range from books to DVDs and much more. It is especially popular for selling books as they list almost all books that exist. This means that Amazon is selling any book that you want to review. This gives you a wide choice for creation of the affiliate links.

You can give a link at the end of your review, saying “read more reviews at amazon.com”. This link would take them to the products page. A number of satisfied customers do leave reviews on the page. Many users would be tempted to buy it if they see positive reviews. This makes a great strategy.

A number of sites do not deal in selling books. But whatever they might be selling, there will be something written about it. Just give a brief introduction like a feature and provide links to read more reviews' at the end. Giving bad reviews once in a while may bring down income marginally but definitely increase your credibility.

Every book review written once in a while will help you earn extra income. People would start to find reviews on search engines and a click of the mouse on these links would take them to the official site of Amazon from your site thus resulting in the generation of an extra income over reviews written a long time ago.