Abstract: A method for managing personal data of a user of a user device is provided. The user device is adapted to have installed thereon an application (APP). The APP is configured to require access to the personal data when running on the user device. The method comprises creating a certification for the APP, the certification being based on a corresponding statement providing information regarding the relationship between the APP and personal data; associating the certification to the APP for certifying the APP; allowing the user to provide user-defined policies about exploiting the user personal data; checking whether the user-defined policies provided by the user are compatible with requirements of the APP defined in the corresponding statement. If the user-defined policies are compatible with the requirements of the APP defined in the statement, the method executes operations when the APP running on the user device requires to access personal data.

Abstract: A method for managing reputation scores of members of an online community, wherein each member is associated with a set of inviting members having invited that member to join the online community and with a set of invited members having being invited by that member to join the online community. The method includes, for each member: determining a respective reputation score at the time when he/she joins the online community; and updating the respective reputation score based on a change in the reputation score of at least one of: at least one inviting member among the respective set of inviting members, or at least one invited member among the respective set of invited members.

Abstract: A method for managing personal data of a user of a user device is provided. The user device is adapted to have installed thereon an application (APP). The APP is configured to require access to the personal data when running on the user device. The method comprises creating a certification for the APP, the certification being based on a corresponding statement providing information regarding the relationship between the APP and personal data; associating the certification to the APP for certifying the APP; allowing the user to provide user-defined policies about exploiting the user personal data; checking whether the user-defined policies provided by the user are compatible with requirements of the APP defined in the corresponding statement. If the user-defined policies are compatible with the requirements of the APP defined in the statement, the method executes operations when the APP running on the user device requires to access personal data.