One of a host of Etherpad inspired collaborative notepads, but with a few little extra features, like being able to make a link to a read only page.
http://ictmagic.wikispaces.com/ICT+%26+Web+Tools
"... a new and productive way to collaborate on text documents, useful for meeting notes, drafting sessions, education, team programming, and more" (retrieved 2010.10.15)