When students are given access to the Internet it is imperative that you monitor what sites they are visiting. One way to monitor this is to connect your computer to your classroom TV via a TVator. This allows you to view the computer through the TV from anywhere in your room. The other solution is to use a program such as NetNanny. Programs of this type will screen what the students can access by looking for key words in site descriptions.
Security Be very careful when allowing students to build personal web-pages.