Web sites provide the key interface for consumer use of the Internet. This research reports on a series of three studies that developand validate Web site usability, design and performance metrics, including download delay, navigability, site content, interactivity, and responsiveness. The performance metric that was developed includes the subconstructs user satisfaction, the likelihood of return, and the frequency of use. Data was collected in 1997, 1999, and 2000 from corporate Web sites via three methods, namely, a jury, third-party ratings, and a software agent. Significant associations between Web site design elements and Web site performance indicate that the constructs demonstrate good nomological validity. Together, the three studies provide a set of measures with acceptable validity and reliability. The findings also suggest lack of significant common methods biases across the jury-collected data, third-party data, and agent-collected data. Results suggest that Web site success is a first-order construct. Moreover, Web site success is significantly associated with Web site download delay (speed of access and display rate within the Web site), navigation (organization, arrangement, layout, and sequencing), content (amount and variety of product information), interactivity (customization and interactivity), and responsiveness (feedback options and FAQs).

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Developing trust between suppliers and consumers is critical for the continued growth of Internet commerce. This article presents an empirical investigation into how firms promote trust by exploring the use and prominence of Trusted Third Parties (TTPs) and privacy statements. The Web sites of 102 publicly held firms with predominantly Internet based businesses were examined for their use of TTPs and privacy statements, the number of links, currency of the Web site, length of time the Web site had been operating, traffic, and financial performance. Surprisingly, only 17 of the firms utilized trusted third parties and only 45 had privacy statements. The article presents a methodology for the analysis of four propositions that explore the relationship of embeddedness and a firm's length of time online to the use and prominence of TTPs and privacy statements. The exploratory data in this article clearly supports the proposition that the use of TTPs and privacy statements increase with the embeddedness of the Web site. This article then discusses the potential reasons for this finding including how TTPs strategically solicit firms and why trusted firms may be more likely to be embedded. The remaining three propositions show mixed results but provide insight into the strategic use of TTPs and privacy statements. One key insight is that TTPs and privacy statements are actually used quite differently by firms to promote trust in Internet commerce.