A Review site is basically a site on which honest reviews are posted about different people, companies, goods, or services. These sites might use Web 2.0 methods to collect feedback from blog readers or might hire professional reviewers to write reviews on the subject of common interest to the site. The latter approach is preferred because it helps the product review site build up credibility over time and it builds links to the relevant sites and can generate even more traffic, which is good for any search engine optimization (SEO) activity. A good review site should collect honest and neutral testimonials of the products from real users.

Review sites are a great source of information for customers, who need to know more about a particular product before buying it. A popular among many is Google Product Reviews, which has become a favorite among users as it provides more in-depth details than any other website. A high number of product review sites can make money online from advertising revenue. Some even make money by placing ads on their website, which helps in generating traffic for their site further.

Some of the other popular among affiliate marketing programs are Commission Junction, Clickbank, Amazon and JVZoo. Commission Junction is considered to be the largest product review website today, which not only allows customers to post their views and review about the product but also offers affiliate marketing programs, where one can earn commissions by promoting the product on their website. Amazon is famous for the product reviews and recommendations it gives to customers. Users post their experiences with the product on these review websites, which help customers make a better decision on what to purchase. Clickbank and JVZoo review products that are related to affiliate marketing programs and offer customers an option to pay for recommendations.