By initiating or accepting a friend request, users grant a wider audience access to their content and, by extension, co-ownership of their personal information. The third principle of Petronio's CPM states that co-ownership implies. Users are unlikely to have a formal discussion about setting privacy rules. Rather, there is an implicit assumption that co-owners of the information will refrain from posting information to Facebook without their consent. When co-owners of private information encroach on mutually understood privacy rules, “boundary turbulence” ensues. This may occur due to an error on the part of the co-owner, such as a drunken omission, or it may result from an intentional violation of established confidentiality boundaries, as in the case of disclosure of disturbing information for the benefit of an individual. Facebook, being a public sphere used by users from all aspects of life, means that the cross-contextual distribution of content and the resulting lack of established parameters can lead to boundary turbulence. In such cases, the co-owners of the information will lose confidence in the transmission of the information to that particular person and, as such, may be warned, removed from their interpersonal network of friends, or even blocked from viewing any content or dissemination. 'be