Looking to collaborate on a document with a team. Google Docs would be perfect, however the users do not all have Google accounts.
Ideally want the document to be editable by all users with the link (or password), however its important that it attributes changes to a specific user nickname, rather than just 'anonymous'
Finally - I'd like to be able to see all markup similar to "ORIGINAL: SHOW MARKUP" in Microsoft Word.
It's important that all users can see all changes that have been made against the original, rather than having one live version that only reflects the changes made by the latest editor.
37Signals' Writeboard does the first part, but not the second. Each time changes are saved, it becomes the latest live version.
I've also looked at EtherPad-powered services - which also will only let you edit off the latest revision, rather than keeping the original for all the users to edit off of