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- A MicroInteraction Tool for Online Text AnalysisPublication . Correia, Rita Pessoa; Silva, Bruno Miguel Correia da; Correia, JoãoMobile devices allow users to remain connected to the World in a ubiquitous way, creating new contexts of media use. Considering the structural changes in the journalistic market, media organizations are trying to lead this digital transition, (re)gaining the attention of the public [WS15]. This digital evolution can bring either many advantages or open the door to rushed journalism, such as the publication of fake news and malicious content, which can have critical effects on both individuals and society as a whole. For this reason, it’s becoming really important to factcheck the sources of information. Misinformation is incorrect or misleading information, which can lead to the distortion of people’s opinions on several matters and unintended consequences. Thus, factchecking claims with reliable information from credible sources is perhaps the best way to fight the spread of misinformation. By doublechecking a claim, you can verify whether or not it’s true. However, it’s important to use verifiable and reputable sources to factcheck that information, otherwise, you risk perpetuating the cycle [Ohi]. In order to help to fight this global issue, we can use the interaction from Internet users with the content producers/journalists, so those users can interact with Web content, validating, commenting, or expressing emotions about it to decrease the percentage of false, malicious or questionable content, as well as simultaneously create a profile of these same users and content producers, through the application of reputation rules. With this strategy, online content producers can get dynamic interaction and feedback from the public about the published content, so they can factcheck it and have a greater degree of truthfulness. This Master’s dissertation presents a Web tool that enables users to perform a fast factchecking, interacting with the media responsible for the news or text. This work, starts by presenting a study on the main tools and techniques that are being used in journalism for factcheck information. Then, it describes in detail the implementation process of the developed tool, that consists on a Web extension to help in this factchecking domain. Finally, the dissertation presents an assessment and tests that were conducted to evaluate the feasibility of the solution.