I recently hopped on the GTD bandwagon and among other changes I deleted all my mail rules and started over. Previously, I was routing my email to different folders based on if I was on the To: line, the CC: line, it came to one of the team aliases or none of the above. I discovered that I pretty much only keep good track of my main inbox with the stuff that came directly to me. Other stuff just languished, unprocessed. Now, I route mail to folders based on the mailing list it comes from. Some mailing lists have lower priority than others. This newspaper view would be perfect for quickly scanning these low priority mail folders, esp. with the feature to mark all as read when leaving the folder.