Objective-The objective of the study was to determine the risk factors for Internet-initiated victimization of female adolescents. In particular, it was expected that girls who experienced childhood abuse would show higher vulnerability than their nonabused peers. In addition, the study examined how provocative self-presentations might be related to online sexual advances and offline encounters.Patients and Methods-Adolescent girls aged 14 to 17 years who had experienced substantiated childhood abuse (N = 104) were demographically matched with nonabused girls (N = 69) and surveyed regarding Internet usage, maternal and paternal caregiver presence, substance use, highrisk sexual attitudes, and involvement with high-risk peers. To measure online self-presentation, participants each created avatars, which were quantified according to the degree of provocative physical features.Results-Forty percent of the sample reported experiencing online sexual advances, and 26% reported meeting someone offline who they first met online. Abused girls were significantly more likely to have experienced online sexual advances and to have met someone offline. Having been abused and choosing a provocative avatar were significantly and independently associated with online sexual advances, which were, in turn, associated with offline encounters.Conclusions-A history of childhood abuse may increase Internet-initiated victimization vulnerability. Parents should be aware of the ways in which their adolescents are presenting themselves online. Making adolescent girls and their parents aware that provocative online selfpresentations may have implications for sexual solicitation might help to ward off sexual advances Many Internet-initiated sex crimes originate in social networking Web sites, 1 several of which use interactive virtual personas or avatars as a means of user interface. An avatar is a selfrendered, digital representation of the user and, in many social networking sites, the fundamental avenue by which virtual identities are presented to others (Fig 1). For example, Second Life presents users with hundreds of bodily characteristics to choose from spanning all shapes and sizes, allowing for limitless composite possibilities. The selection of an avatar is just 1 example of how social network users choose to present themselves to other users. Many social networking sites, such as MySpace and Facebook, allow self-descriptions and photographs as a means of self-presentation, and these, like avatar selections, may hold considerable influence in shaping online behavior and interactions. There is evidence that the ways in which users present themselves as avatars shape the behaviors of both users and perceivers. 19 For example, avatars with highly feminine features are among the most attractively rated virtual images. 20 A recent study found that people assigned to an attractive avatar were more likely to approach opposite-sex strangers and to engage in higher rates of self-disclosure than people with unattractive avatars. 21 Th...