What do you think are the dangers of when using the Internet?

I think there are several dangers when using the internet. It could accommodate pop ups that leads to viruses on your computer. Also visiting certain websites that you shouldn't are left in your history and your never know when someone could stumble upon it. Another danger of the internet is inappropriate information we put on social networks; for example Facebook, twitter, MySpace, hi5 etc. Our whole lives shouldn't be placed online. People could use your personal information and black mail you or steal your identity.