Community-based research can improve validity and benefit its subjects, but building trust with communities and research subjects can be challenging. Social media is a powerful tool that can be used to build connections and share information. Yet, little research has been done on how social media can be used as a recruitment and communication tool for community-based research (CBR) projects. Our study used Facebook to advance the goals of a community-based social science research project in Little Rock, Arkansas. We compared participation and results distribution rates for this longitudinal research project in 2012, 2016, and 2018, and we found increases in 2018, the year we used social media. The results indicate that social media can aid CBR by helping to build trust, improve credibility, and facilitate communication.