Readabl, Inc. has PaperKarma (iTunes Link) for the iPhone and iPod Touch in the iTunes App Store for FREE for a limited time.

PaperKarma is the easy way to take control of your paper junk mail, cut your paper waste, and help save the Earth — by taking photos! Simply pull out your phone and snap photos of the offending mail. PaperKarma will figure out what it is and how to stop it.