Young adults (YAs) on social networking sites (SNS) can quickly and widely send, receive, and access information. Up to 85% of YA Facebook, Instagram, and Twitter profiles include alcohol-related content; thus, YAs are sharing and exposed to alcohol content on SNS. Alcohol displays on SNS are associated with YA high-risk drinking cognitions and problem drinking. In this project we focus on offline and online modes of social influence for YA alcohol use.