The Internet has helped businesses and consumers in conducting online commerce (e-commerce). Online auctions are one of the most popular forms of online commerce. At the same time, the Internet has helped people in forming online communities. However, the extensive research on e-commerce, especially online auctions, has not paid attention to activities in online communities and their possible impact on ecommerce. In this paper, we look at this issue and show empirical evidence why we should look at the relationship between online communities and e-commerce.