The purpose of this study was to quantify the amount of alcohol-related content posted by college students on a popular social networking website and explore the relationship between that content and actual drinking behavior, as well as perceived drinking norms. The latter has been indicated as an important variable influencing college student drinking behavior, with students tending to overestimate the quantity and frequency of other students’ alcohol use. To better understand alcohol-related content students are exposed to online, researchers viewed college students’ Facebook profiles, recording the presence of alcohol-related content. A total of 68 college men and women participated by allowing researchers to view their Facebook page, recording the amount of alcohol-related content, and completing a brief survey on which they reported alcohol use and perceived drinking norms. Results indicated 76.5% of participants’ profiles contained alcohol-related content. This included a substantial proportion of underage participants. The presence of a significant relationship between alcohol-related content on Facebook and reported alcohol use, and between reported alcohol use and perceived alcohol use of Facebook Friends suggest social networking sites may contribute to perceived drinking norms and should be addressed in future intervention efforts aimed at reducing college alcohol abuse.