We present a study that investigates American, Chinese, and Indian social networking site (SNS) users' privacy attitudes and practices. We conducted an online survey of users of three popular SNSs in these countries. Based on 924 valid responses from the three countries, we found that generally American respondents were the most privacy concerned, followed by the Chinese and Indians. However, the US sample exhibited the lowest level of desire to restrict the visibility of their SNS information to certain people (e.g., co-workers). The Chinese respondents showed significantly higher concerns about identity issues on SNS such as fake names and impersonation.