 I think that the internet provides a good environment to do interventions. You can do it easily, quickly, briefly, and you have access to almost unlimited information. I think that the role of health advisors or of health professionals is to give reliable information. I opened a thread in the Silk Road Forum giving free advice to Silk Road users about drugs and unhealthy in a hand-reduction perspective. I have had more than 60,000 visits to the thread and more than 800 questions. So that means that when we offer the drug users the opportunity to access to reliable information, they care. We have prejudice against drug users that are people who are not concerned about their health, but drug users are as any other person that they search to protect themselves and if you give them the opportunity to have access to information they accept, they accept very well. The intervention in virtual spaces is necessarily limited. It is not comparable to an interview or an exploration face-to-face with a person and so it is much more limited than we could do in the real world. On the other hand, in the virtual world you can gain access to a lot of people who you wouldn't contact in any other form.