The chapter describes recent developments in online content analysis. Three methods of analysis are distinguished: the thematic method which started with investigating  (co-) occurrence of themes or concepts and which includes today more sophisticated views, the semantic method in which subject-verb-object relations are considered, and the network method, where the object in one relation can be the subject in another one. In all three methods data might be encoded from the perspective of the investigator of the study that is performed (instrumental approach) or from the perspective of the author of the message (representational approach). In all methods the computer plays a role: as a management tool, as a tool that performs the analysis, even performs statistical computations.