Online Collaboration:
TWiki Example -- http://arensfam.com/index.php?title=ArensFam_Home
Important or Interesting Examples of Networked Approaches: http://www.barrfoundation.org/resources/resources_show.htm?doc_id=239289
http://www.ma-smartgrowth.org/
http://www.pinestreetinn.org/index.html
http://www.wkkf.org/default.aspx?tabid=75&CID=274&NID=61&LanguageID=0
http://www.bostonyouthsports.org/default.aspx
http://www.vtsprawl.org/Initiatives/sgcollaborative/VSGC_main.htm
http://www.wm-alliance.org/Brix?pageID=65
http://www.wearesmarter.org/default.aspx
http://dotank.nyls.edu/communitypatent/index.php
http://www.globalgiving.com/index.html
http://www.wikia.com/wiki/Wikia
http://www.changingthepresent.org/
http://www.omidyar.net/home/ -- Interesting newsgroup
Not quite networked approached, but still contain interesting or potentially useful information:
http://www.marketcreek.com/mcp_ourstory.html
Other Interesting Sites:
http://cdms.lanl.gov/Research.html
http://www.onenw.org/toolkit/collaboration-tools (Gideon Rosenblatt's organization)