History Log for InDesign CS/CS2/CS3

From Rorohiko:

This is a very simple tool that allows you to maintain an automated log of file changes to an InDesign document inside of the document.
Each time a properly set-up document is opened, a dialog appears where you can fill in or modify a 'tracker ID' - in most cases you'll simply use your first name or full name. The tool then appends the tracker ID (whatever it was) together with a time stamp at the end of a text box that sits on your pasteboard.