You're right.
I was imagining (though didn't mention, oops) a "Mark all nodes as Seen" option.

That got lost in my post, as I was thinking (or, not thinking at the time) the server could perform some magic, or something.

:-)

What I meant was:

Could we have the option of setting a timestamp and then requesting all nodes newer than the last timestamp? This would allow the user to "Mark all nodes as Seen" or something, and then limiting the list to "New nodes since (the timestamp)"

Sorry for the brain cramp... :-)

Russ