The sharing of self-generated sexually explicit images or videos by mobile phone or online, is now commonplace amongst young people to the point that it is considered 'mundane' whether or not young people engage in it themselves. And it seems that lots do... Now, I know that young people want to experiment and explore their sexuality. And the thrill of taking risks and pushing boundaries is always going to be part of growing up. Frankly we are not going to stop sexting merely by instructing young people not to do it, or by pointing out that explicit under age images are illegal and they risk arrest. But I am deeply concerned that risks are not yet fully understood.