List of Ning Social Networks in Education

Special Education in the 21st Century - Educators, Parents and EdTech Leaders discuss and share resources for bringing Web 2.0 and 21st Century Skills to Special needs students   http://21stcenturysped.ning.com/

Classroom 2.0; Web 2.0 and Collaborative Technologies for Education
http://www.classroom20.com
10,000 Members strong (as of 7-25-08)

PBS Teachers Connect -Launched July 2008
http://www.pbs.org/teachers/connect/

Using Ning for Educational Social Networks
http://education.ning.com/
2,000 Members strong (as of 7-25-08)

The Teacher Collaborative; Putting great minds together to create 21st Century Classrooms http://teachercollaborative.ning.com/

EduSpaces Social networking site dedicated to education and educational technology
http://eduspaces.net/

RezEd   Educators Social Network for Second Life http://www.rezed.org/