Considerable research has been conducted on the use of the findings of program evaluation, but little, if any, attention has been paid to the soundness of the methods of this research. If the methods are not sound or not well described in the research, the strength of the conclusions of the research is unknown. The authors examine the empirical studies reported in five widely cited reviews of the literature on program evaluation use and summarize the types of methods used, the professions for which they were conducted, and the extent to which they met two basic criteria for soundness. It was concluded that, by and large, the body of studies does not adequately address the criteria. With care, the findings of the research literature on the use of evaluations might provide guidance for evaluators, but they lack sufficient scientific credibility for other uses.

Abstract. This paper investigates Norwegian university students' evaluations of web site credibility and site authors' vested interests with respect to a textbased academic site and an informational site with commercial support. Credibility ratings were higher for some aspects of the academic site even though the non-academic sit was rated more highly in presentation design and currency. Negative correlations emerged between academic level and confidence in deciding web site credibility and in detecting misrepresentations.

In this contemporary era, social media has created new environment for marketing where not only company advertise its product as well customer share his or her views about product with others.Marketers adopt various marketing strategies to conduct their business activities in profitable manner such as internet. The internet has become more and more important in today's technology addicted society.Consumers of today use the internet as a tool to communicate, do shopping and search for information.Hence, the internet has become a convenient way for organizations to reach out to consumers in an easy and cheap way, especially through the tool viral marketing. Newcomers to electronic markets are forced to accumulate customers as rapidly as possible. One strategy to fulfill this aim is so called viral marketing, which seems an appropriate term for describing the pattern in which Internet companies spread by making use of customer referrals. The aim of this article is to describe and explain common features of viral marketing strategies and to outline chances and risks associated with using Internet word-of-mouth in consumer settings.