http://www.perlmonks.org?node_id=20784

Yet again I have a suggestion for the Newest Nodes page (still hoping for the # of replies feature!). Clearing Newest Nodes with "I've checked all these" is a rather broad slash at clearing stuff out when you've gotten behind; it might be good to have PM not include nodes in the list that you've actually read (i.e., on a per-node basis). This would essentially entail implementing a history system, which would probably be fairly database-expensive (requiring an additional update for each node accessed) and so possibly not desirable, but I thought I'd throw it out there.