Except that carbon in the air is not really a significant problem. And the volume of carbon in paper used at today's (declining due to advances like e-book publishing) rate is such a microscopic fraction of the earth's natural carbon load that you could never measure the effect of your proposal.
And don't try to lay any "global warming" BS on us!
If you are truly commited to stopping "AGW" -- stop breathing!
You've picked the wrong guy. I'm a complete skeptic on AGW. What I was trying to do was turn the "greens" arguments against themselves. They can't be both worried about AGW and in favor of recycling paper.