That may not make much sense.. say you logged in, went to the
newest nodes page, found some interesting question or reply,
which was possibly written only few minutes before
(they sort by newest first..), in the same window went to
read that post. When you come back to newest nodes page,
it doesn't show you all other new nodes (which were
below the one you read) because you already have
checked the page recently.
A bit confusingly formed idea.. Hope you get
what I mean.