Zen Cart contribution which would help you export easy your products into shopping.com - one of the best Pay-Per-Click service. The Shopping.com network includes 80 percent of the worlds top 300 retailers and represents more than 10,000 merchants. The service provides users with great depth in product recommendations, including more than 1 million consumer reviews with price information on 5 million products from 3,000 retailers. Shopping.com is particularly good in handling some of the softer categories like home and garden. Every successful store "must use".