How can I become a responsible citizen when using technology?

One could be a responsible citizen by, for example, using the internet for appropriate things like school work. Responsibility nowadays is hard to find with teenage boys using the internet. The internet thats being used by teenagers is usually used for viewing pornography, webcam viewing, and other inappropriate things. What has to happen is a limit has to come up, the government should block these website for anyone under the age of 19. Another irresponsible citizen is a citizen that plays online games in class when he/she should really be working.