Pope Benedict addresses young people ahead of World Youth Day in Rio next year:
I would like to emphasize two areas where your missionary commitment is all the more necessary. Dear young people, the first is the field of social communications, particularly the world of the internet. As I mentioned to you on another occasion: “I ask you to introduce into the culture of this new environment of communications and information technology the values on which you have built your lives. […] It falls, in particular, to young people, who have an almost spontaneous affinity for the new means of communication, to take on the responsibility for the evangelization of this ‘digital continent’” (Message for the 43rd World Communications Day, 24 May 2009). Learn how to use these media wisely. Be aware of the hidden dangers they contain, especially the risk of addiction, of confusing the real world with the virtual, and of replacing direct and personal encounters and dialogue with internet contacts.
Full text here.