What is social media? The Oxford English Dictionary1 definition is: 'Websites and applications that enable users to create and share content or to participate in social networking' Many of us will instantly think it relates to sites such as Facebook, Twitter and Instagram. However, it encompasses a variety of websites and all types of social networking. When I was asked to write this article, I researched some basic demographics about social media, which I found astounding. The United Kingdom has a population of approximately 65 million2 and 92.6% of this population actively use the internet, a number far higher than I expected. Whilst sitting on the train travelling to work and walking from the station to the hospital, I notice that the majority of people are transfixed to their mobile devices. I find the same scenario on my return journey, and notice more and more people out for dinner with their partners and family, mute, as they are using their mobile devices and not engaging in verbal conversation. What has happened to the world? Am I old before my time? Do people not socialize verbally anymore and share their experiences; do they only use social media? The answer to the latter, although may not apply to everyone, is yes to an extent. This is certainly the way the trend seems to be moving. I am a supporter of social media, but am concerned that our lives are overrun with 'apps' , 'posts' , 'tweets' and 're-tweets'. What we as professionals need to remind ourselves is that our 'electronic posts' may well be visible to all, and therefore we must consider what we post on social media, as the footprint is likely to remain there for ever, irrespective of removal of, or deletion, of posts. Some have described this as a digital tattoo.3 We should all be aware of the General Dental Council Guidelines⁴ on social media, for both students and qualified dentists which, in the Professional Standards, states: 'You must not post any information or comments about patients on social networking or blogging sites. If you use professional social media to discuss anonymised cases for the purpose of discussing best practice you must be careful that the patient or patients cannot be identified'. For those of you not familiar with it, in 2015 there was a case whereby a dental nurse was reported to the GDC for unprofessional and offensive behaviour and the professional conduct committee found that the nurse's fitness to practise was impaired, and issued a reprimand. Only recently have we seen the case of the American Dentist who shot a Tiger which was posted on social media and became headline news.⁵ Not a practice builder I am sure you will agree but, irrespective of his actions, his professional profile was darkened. So, why do we use social media? Well this can be for a variety of reasons, which can include updating friends and family on situations; especially in recent months, where we have suffered terrorist attacks. Facebook has allowed people to 'check in safely' , for discussions; creation and sharing of ideas, social update...