[Zope-CMF] DublinCore Contributors

[Ignacio Dosil Lago]

  Hi all
  As a content can be modified by different users, for item, when several 
owners in the same folder:
what about updating the contributors tuple automatically as a content is 
modified?
what if the last modifier login name is shown with the last modification time 
or, at least, add a method or attribute to the default DublinCore 
implementation to allow it?

 Are there any reasons not to do this?

 Thanks.