In the unmediated model, while we found that the consumer’s perceived risk mostly has a negative influence on purchase intention (i.e., performance risk, psychological risk, financial risk, and online payment risk), two types of perceived risk (i.e., social risk and delivery risk) turned out not to influence purchase intention;thus, H1-3 and H1-6 were rejected. The lack of support for these two hypotheses may be the outcome of the changes in the recent online shopping environment. A likely reason why there was no significant influence of social risk was that Internet shopping has become so popular amongst users that nobody considers purchasing a product online as unusual. In particular, with the advance of Web 2.0 tools, such as social network systems, consumers who have purchased products are increasingly sharing their buying experience online. Furthermore, potential customers can also have access to useful suggestions from others and anticipate what responses their friends and family will give concerning their online purchase in advance. As a result, other people’s views on online shopping are no longer a concern. With regards to the delivery risk, most online merchants outsource their delivery function to well-known specialized companies, such as UPS, FedEx, and DHL. With advances in new technologies, such as RFID and wireless barcode reading devices, these companies provide real-time tracking information.In particular, in a metropolitan area, same-day delivery service is very common and reliable. In addition, the consumer knows that in the event of incorrect delivery he can always call the customer service to identify the potential problem and request that the order should be reshipped to the correct address. Hence, a consumer who is willing to buy a product online is not likely to abandon his intention, even if he has some worries over correct delivery of the order,because he will assure himself that any potential issue with delivery can be properly addressed by the vendor.