http://iwbteachers.wikispaces.com/
For a more extensive collection of interactive websites to use in the classroom try this wikispace.
Loads of interactive websites to use on an IWB no matter what software you are using or for students to use on their computers. Great for group work, differentiated lessons, extension and enrichment. Just great engaging activities.KidPort
K-6 All KLA's

Global Collaboration
http://www.globaloria.org/
external image globaloria_mainpage_02.png

Web2.0 available for students on the DET network filtered system

http://voicethread.com http://www.globaloria.org/ external image eyeold.gif

Web2.0 available for teachers on the DET network filtered system

Ning
http://www.ning.com/ but not flatclassrooms.ning so guessing no ning sites. Have requested an unblock for flatclassroom ning.
http://www.classroom20.com/ Welcome to Classroom20.com, the social networking site for those interested in Web 2.0 and collaborative technologies in education.