Users seem to be confused on who is the original author of a page, so I'd like to change the byline to for example: "Created by Joe Smith, Last Change by Tim Colson (Oct 18, 2004).

Why? Mike creates a page called "How to configure J2EE stuff", Tim makes a trivial spelling correction to the page, then Joe looks at the page and sends Tim an email saying, "Thanks for your configuration document! I have additional questions..." because he assumes the "Last changed...Tim Colson" means Tim is the original author.

Yes – this did happen!

The names have been changed to protect the innocent (i.e. well, Tim and Mike are real names because I think we'll agree they really aren't all that innocent. <grin>)