Driving traffic to your website using testimonials will get you a good amount of traffic. First off many companies are looking for consumers to say good things about their products because it builds their creditability. Next when you find a good product why not say good things about it. It is a win-win for everyone because they get a free testimonial and you get free exposure.
First never vouch for a product you have never tried because if the product sucks people are going to think the same about your product. Also only vouch for product that you have used and actually helped you. Your creditability goes down the drain if you vouch for a product that is worthless. So vouch for products that have benefited you. Driving traffic to your website gets easier with quality testimonials.
So after you find a product you were able to benefit from, send a email to the company. What you want to explain in your email is how their product or service helped you with your product or service. For example" Dear Sam, I purchased your XYZ product and it benefited me in many ways. First I was having trouble marketing my website http://www.leadgenerationworld.com. Then I applied the principles of your product and overnight I had 25 new sales. And let me tell you it did not stop there because of YXZ product I am having my best month ever. We have had over 500 new sales because of your product. Thank You very much! Anyone who is serious about building their business must get this product." Now see you explained what your business was with your link and you explained how the product benefited you. And that's it you get your link on their webpage, plus you get a one-way link (which helps you with search engine ranking).
So driving traffic to your website should get easier using testimonials.