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Internet users (Lenhart & Madden, 2007). Of the teens with completely
open profiles, 46% reported including at least some false information.
Privacy is also implicated in users' ability to control impressions and
manage social contexts. Boyd (in press-a) asserted that Facebook's

introduction of the "News Feed" feature disrupted students' sense of control,
even though data exposed through the feed were previously accessible.
Preibusch, Hoser, G?rses, and Berendt (2007) argued that the privacy

options offered by SNSs do not provide users with the flexibility they need
to handle conflicts with Friends who have different conceptions of privacy;
they suggest a framework for privacy in SNSs that they believe would help
resolve these conflicts.

SNSs are also challenging legal conceptions of privacy. Hodge (2006)
argued that the fourth amendment to the U.S. Constitution and legal
decisions concerning privacy are not equipped to address social network

sites. For example, do police officers have the right to access content posted
to Facebook without a warrant? The legality of this hinges on users'
expectation of privacy and whether or not Facebook profiles are considered

public or private.
To differentiate the articulated list of Friends on SNSs from the
colloquial term "friends," we capitalize the former.

Although one out of seven teenagers received unwanted sexual
solicitations online, only 9% came from people over the age of 25 (Wolak,
Mitchell, & Finkelhor, 2006). Research suggests that popular narratives
around sexual predators on SNSs are misleading—cases of unsuspecting

teens being lured by sexual predators are rare (Finkelhor, Ybarra, Lenhart,
boyd, & Lordan, 2007). Furthermore, only .08% of students surveyed by the
National School Boards Association (2007) met someone in person from an

online encounter without permission from a parent.

ASSIGNMENTS
1. What does the term ‘social networks sites’ mean? Use the figures

4.8-4.9.
2. What SNS do you know?
3. What SNS do you use?

4. How do you think, what are the purposes of the SNS ideally and in
real life?
5. What makes social network sites unique?

6. What is the backbone of SNS?