1) The document analyzes survey data from 403 college students collected in 2010 about their experiences with privacy and disclosure on Facebook from 2006 to 2010. 2) It finds that concerns over unwanted audiences seeing their profiles is significantly associated with privacy-preserving behaviors like making profiles less visible, rather than experiences of actual negative consequences. 3) College students are strategically adapting their behaviors and disclosure on Facebook over time through cost-benefit analysis and impression management rather than solely in reaction to personal incidents.