Patient education is one of the most important tools for improving people's health consciousness, patient cooperation and compliance.Obviously, medical doctors are the most trustworthy sources for that kind of information, but there are other role-players as well. The printed specialty books, magazines and leaflets are widely accepted and then there is the internet.What percentage of the population can be reached through the internet? What are these people looking for? How are they searching for the information they seek? What kind of site/information do they consider credible? How can they differentiate true and false information? What are the hidden dangers?