This thesis examines trust on the web. W3C is a consortium of organisations focusing on development of standards for web publishing, and one of their projects within the semantic web track is web-based annotations. The purpose of the investigation at hand is to evaluate to what extent different factors are being considered when webbased information is judged, and whether web-based annotations could serve as a confidence-inspiring tool. The main research question was therefore: How do the informants experience Annozilla as a possible confidence-inspiring tool? The empirical material consists of a case study with eight informants. They were introduced to the annotation system Annozilla in an individual search session. In connection to this each informant filled a questionnaire which served as the main data of this study. The results of the study shows great variation within the group of informants. A cautious conclusion of this study, given its limitations, is that annotations under certain circumstances can work as a confidence-inspiring tool. The annotation tool and the focus given to the semantic web as theory gave rise to another question, whether the semantic web is a prerequisite for these annotations. The conclusion is that one cannot exclude the importance of social networks, and in combination with what the infrastructure the semantic web offers we would come one step closer to trust on the web.