The personal approach:
Generally speaking, the most successful promotions are those that are more personal. A recommendation coming directly from you in an e-mail is much more likely to be successful than a random banner ad placed on any old page of your web site.  Why? Because your opt-in list consists of people who want to hear from you. They've given you their e-mail addresses in order to receive information from you. Since you've developed a relationship of trust with your opt-in subscribers, they'll be much more receptive to your affiliate products if they know those products have your personal "seal of approval."

The informative approach:

Another successful approach to affiliate marketing is to use the information-based tools: product reviews and informative articles.

Your visitors will feel much more confident about making a purchase if you've told them – in detail – why it will benefit them, and if you've given them the information they need to help them make the "buy" decision.

1. E-mail promotions

2. Articles and reviews – especially when used as ads

3. Pop-up ads

4. Text ads

5. Classified ads