Originally Posted by Vitamin Dean
So can I pick them up after I've duplicated them or do I have to leave them in one huge pile and guesstimate when I've got enough?
I just duped roughly 50 nodes, picked them all up, and am still able to dupe more. So I'd say after you've duped a reasonable amount, go ahead and pick them up. If you're only shooting to have X amount of them, this will help you figure out how much time you needs to spend doing so.