Social media has a role in the lives of many family carers. We present a case study of Facebook (FB) use in Care Alliance Ireland, a small Irish not-for-profit carer support organization. In 2012, in its role as coordinator of National Carers Week, Care Alliance Ireland set up a Facebook page to increase reach and awareness of the week amongst family caregivers who used Facebook. Philanthropic donations in the early years of FB use enabled the large-scale and relatively efficient recruitment of followers through targeted social media ads.