Edmodo is a social networking platform for classrooms that has been around longer.  Edmodo is a free, secure social network for teachers, students, and schools.  It provides classrooms with a safe way to connect and collaborate by offering them place to exchange ideas, share content, and access homework, grades and school notices.  Edmodo is accessible in any browser and from any mobile device.  Like Diipo, Edmodo allows teachers to post messages, discuss classroom topics, assign and grade classwork, share resources and materials, and network and exchange ideas with peers. Edmodo does not have an age limit, students under the age of 18 must have a parent or guardian read the terms of service prior to use.

 Diipo has dashboards and apps that keep students up-to-date, help them get questions answered, and let them collaborate on blogs and group projects.  Workpages keep students organized from project to project.  Direct messaging features let students start a private conversation with classmates and teachers.  Online project notebooks let students work together and share the information they collect in one, centralized location.  An educator community lets teachers share best practices, educational content, brainstorm for collaborative projects, and pen pal programs between classes.  A class roster makes it easy for teachers and students to communicate with each other. A built in microblogging platform lets students start a conversation, ask questions, and actively participate in class discussions.  Students can build blogs directly in Diipo to share thoughts, reflect on learning, and write collaboratively.  Teachers and students can upload and share documents, links, and resources with classmates or the entire class.  Every conversation and post is archived and searchable making it easy to catch up or find something later.  Students can also tag messages, content, and workpages to make it easier to organize and find content.  The Diipo platform is wonderfully all-inclusive!  Diipo is intended for students 13 years and older.

As a teacher you create a network for you and your students.

• Share inspiration, ideas, readings, thoughts
• Post discussions, deadlines, homework
• Embed pictures, links and video
• Keep parents informed
• Collaborate on work by providing feedback
• Connect with students outside the classroom in a secure manner!

 Twiducate is a free platform for creating your own micro social network in a Twitter-like format. Twiducate allows you to create a private network for posting assignments and messages to your students or other people you invite into your network. As the creator of your network you create and administer the accounts of the students in your network. Students in your network can reply to your messages and to the messages of other students.

video on it    http://www.freetech4teachers.com/2010/10/twiducate-social-networking-for-schools.html

Everloop is a social networking site designed for use by tweens and their parents. Everloop provides tweens with a closed network in which they can interact with their chosen friends. Everloop gives parents the ability to monitor the interactions of their children with other children in their networks. Tweens cannot expand their networks without their parents' knowledge.  Everloop offers tweens the option to play games, design profile pages, chat, and talk about school-related events.  Everloop could be a good, safe environment in which children can learn responsible social networking behaviors.