Teenager

1.      It is because the social networking sites will shorten attention spans, encourage instant gratification and make young people more self-centered.

2.      The social networking sites such as Twitter, Facebook, Bebo, they can easy to find our friends, and we can talk every time. If our friends no time to talk with us, we also can write a comment. Also, some friend that we are not very close, we will try to talk with them, because it is easy than face to face. And we can find some friends which have some interest same as us. However, we may not know their interest without social networking site.

3.      If we post some information that about our identity, our Privacy is intruded. For example, you do not give your sit to elderly on the bus, some people think that it is a poor behavior, than they may take some photo and then put it on the sites. After that, they find the information about your identity and try to hurt you, Also, some hacker will destroy your computer.

4.      Yes, we can avoid post many information that about your identity. And download some software, e.g. Norton, Kaspersky, McAfee, that can prevent, detect and remove computer viruses worms and Trojan norses.