Online social networking sites are a popular way to share interests, build and maintain relationships and stay more connected to the world. Tools that were not available a few years ago are now used on a daily basis. Social networking has been likened to a digital tattoo. Both Universities and Healthcare Institutions have concerns about the potential implications that students, educators and practitioners may face when using the media. The main concerns are related to patient protection by both qualified and student healthcare workers. This article outlines the guidelines put in place to avoid any mistakes made on SNS and how to maintain an e-professional aura whilst using SNS. Examples of good and bad social networking by students and practitioners are given. How the implementation of recently introduced guidelines impacts on the use of SNS in dentistry requires further research.