Social networking provides a gathering place. It allows groups to meet remotely and to share information with their peeps. Although it is not allowed in school and I don't have access to it there, there are benefits to allowing students to use it. It creates a sense of community and belonging. It is important to educate them on the dangers of using such tools and providing too much information to people they may not know.
iRead and Movies are good sites and would be ways for students to share information.