Good afternoon chairperson judges members of the opposition and ladies and gentlemen I strongly disagree that teenagers should be aloud unlimited access on the internet
I negate by showing that teenagers should have access to computers/internet, but parents should have the right to place limits, conditions, and restrictions on that access.
Types of limits:
Teenagers need to learn good time management skills, and parents can help teach them these skills by requiring that certain time periods be designated "homework time" and certain time periods be designated "free time." Otherwise, teenagers develop something called "continuous partial attention," which is a habit whereby someone does work, while also performing other tasks (such as online chat or social networking), without ever devoting their full attention to either task.  This is a terrible habit to develop, and it causes work quality to greatly suffer.
In addition, there are physical worries in regards to too much computer use, such as carpel tunnel, eye problems, and even death (a girl died due to dehydration in China playing World of War craft for 48 hours straight). Parents should be able to enforce time limits to teach children moderation.
Parents should have the right to prevent their teenagers (13+) from viewing pornography, for example. They should be allowed to install content filtering programs on their children's computers. They should be allowed to restrict certain websites (like Face book) during homework time. And parents should have the right to prevent children from downloading music and movies illegally, since the parents are the ones who would be liable in any lawsuit filed by the RIAA or MPAA.
Parents should have the right to restrict computer use as a punishment/incentive. If a parent threatened "take out the garbage or no video games for a week," and you affirm the resolution, parents would lose all their authority because...