Familiarity is one of the most effective tools for building credibility on the Internet. How do you establish familiarity in a faceless, impersonal medium like the Internet? Simple, tell people about yourself. Post a page that provides a thumbnail sketch that describes who you are. Be sure to include personal data as well as professional credentials. Place your photo on the page so people can put a face with your name. Creating familiarity will impart another level of credibility for you and, by extension, for the product you represent.