Etherpad.

I saw Etherpad on Jane Knight’s blog a few days ago – and thought it sounded good – though didn’t sign up at the time. Yesterday, someone else reminded me of it – so I thought I’d have a look. Unfortunately, it seems that too many others have thought the same as me – so it’s reverted to a closed beta, whiel they work out load issues. It seems pretty powerful from everything I’ve heard – especially when there are more than one editors simultaneously.