Do you share things with friends on Facebook? We’re researchers at Carnegie Mellon University conducting a study to understand how you think about the people in your personal social network. We’ll ask you to provide a list of names of some people that you know (don’t worry, this process is strictly confidential). The study will take place online, and you may complete the study online at your convenience. We will ask you questions about the people in your personal social network. Participants must be between the ages of 20 and 50, and you will be compensated for your time. Please contact us at firstname.lastname@example.org for more information.