The paper deals with the question, how the efficiency and successfulness of web pages in information dissemination can be measured. The paper concentrates on the use of a corporate web page in public relations with different interest groups. Basic principles of public relations theory are summarized.The importance of web-page credibility is emphasized and different factors that can have influence on it are identified. Obviously, reliability, punctuality and quality of published information are of utmost importance. However other factors that can affect credibility (such as technical quality, page structure etc.), are also studied.Special attention is paid to another important topic in public relations theory -how can a web page be used to build and flourish dialogue relationships between the company and different interest groups that affect company's performance. The newly developed model CUT (Content, Usability, Technology) for evaluation of web pages is presented. The model includes evaluation of web pages from different perspectives. While accurate, complete and up-to-date information is certainly crucial, other factors from usability and technology perspective are also emphasized. The model use is demonstrated on a case study of companies from different countries and industry branches.