Parents and families of children with cancer and blood disorders increasingly turn to social media to connect with families facing similar challenges. These multidirectional interactions on social media are not only sources of psychosocial support but frequently sources of medical information. Consequently, such interactions have the potential to meaningfully impact the relationships between parents, children, and pediatric hematology/oncology providers. The 3 case studies analyzed here illustrate the spectrum of ethical and communication issues that arise when families' use of social media enters the pediatric clinical space, including questions related to trust and mistrust, misinformation, patient privacy and confidentiality, and allocation of resources, including time. Ideal approaches to resolving dilemmas related to parental social media use are those that maintain respect, build trust, and acknowledge the changing culture. Social media use is now the norm. Promoting transparent discussions of its use between families and health professionals is, therefore, the key to optimizing health outcomes for children whose parents turn to social media. Mutual respect, collaboration, and long-term relationships are also potential antidotes to the spread of misinformation and mistrust through social media.