This paper explores the potential marketing benefits of going public and of IPO underpricing. We examine the impact of IPO underpricing on website traffic, which is a direct measure of product market performance for internet firms. If underpricing attracts media attention and creates valuable publicity, we expect an increase in web traffic following the IPO. We find that web traffic growth in the month after the IPO is positively and significantly associated with initial returns, and the effect is economically significant. We also investigate media reaction to initial returns for a broader sample of IPOs. The results suggest that the marketing benefits of underpricing extend beyond the internet sector and the “hot issues” market of the late 1990s.