Various bits of information about users accessing Web sites. some of which are private, have been gathered since the inception of the Web. Increasingly the gathering, aggregation, and processing has been outsourced to third parties. The goal of this work is to examine the effectiveness of specific techniques to limit this diffusion of private information to third parties. We also examine the impact of these privacy protection techniques on the usability and quality of the Web pages returned. Using objective measures for privacy protection and page quality we examine their tradeoffs for different privacy protection techniques applied to a collection of popular Web sites as well as a focused set of sites with significant privacy concerns. We study privacy protection both at a browser and at a proxy.

Video games and their design are complex in nature, given the variety of aspects and challenges to face and the different areas of expertise involved. Furthermore, serious games have an even tougher challenge, since the knowledge acquisition has the same importance and relevance as entertainment and pleasure for the players. Serious games in cultural heritage require additional effort to introduce immersivity and collaboration among players. This article introduces a framework, named FRACH, to conceive, design, and evaluate immersive and collaborative serious games in cultural heritage. In particular, FRACH provides a design framework with steps to follow during the whole process that is from the early design phase to the evaluation phase of a serious game. We assessed the efficacy of our framework, with a specific case study in cultural heritage, by implementing a section of a serious game named HippocraticaCivitasGame , where players were allowed to visit the thermae of the historical site of San Pietro a Corte and Palazzo Fruscione in the city of Salerno, Italy, and to solve a given puzzle. Results of the game evaluation showed that the game was effective in terms of knowledge acquisition, the participants enjoyed the game, were highly involved in the immersive experience, and, finally, positively rated the idea of using the game for educational learning in the field of cultural heritage.

The task of protecting users' privacy is made more difficult by their attitudes towards information disclosure without full awareness and the economics of the tracking and advertising industry. Even after numerous press reports and widespread disclosure of leakages on the Web and on popular Online Social Networks, many users appear not be fully aware of the fact that their information may be collected, aggregated and linked with ambient information for a variety of purposes. Past attempts at alleviating this problem have addressed individual aspects of the user's data collection. In this paper we move towards a comprehensive and efficient client-side tool that maximizes users' awareness of the extent of their information leakage. We show that such a customizable tool can help users to make informed decisions on controlling their privacy footprint.

Developments in open data have prompted a range of proposals and innovations in the domain of governance and public administration. Within the democratic tradition, transparency is seen as a fundamental element of democratic governance. While the use of open government data has the potential to enhance transparency and trust in government, realising any ideal of transparent democratic governance implies responding to a range of sociotechnical design challenges.

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