A question pose I:
Is leaving your newspaper on the subway littering?
I believe the answer is NO. Here's what I think. If I am leaving my paper on my seat when I leave the subway (which I do often), then I believe someone else will pick it up and read it, thus deriving use from my action.
Personally, I always look for a left newspaper to pass my time on the train, so I assume at least some other people do as well.
What do you think. Is it littering? Or a simple act of kindness?