I don't get it.  I just switched to digest mode and can't see how it simplifies anything.  The messages aren't in order.  There are no hyper links from the summary and you can't reply to a particular message if you want to.  I was expecting it to be something like the vanagon.com listing with a summary with hyper links and drill down.  Is there another format that is better?  If not, I'm inclined to just save a bookmark to the archives listing and view from there or go back to individual messages.