If you have an extra converter box coupon, or you're on the very long waiting list for one, search engine Retrevo has a "Good Neighbor Coupon Exchange" that can hook you up.
Since the government program's "coupons" (actually magnetic cards) are only good for 90 days, Retrevo matches up those with spare coupons that haven't reached their 90-day expiration date with anyone looking to get one in the closest ZIP code, so the card can be picked up or mailed quickly, if need be. The needers, as you might imagine, outweight the providers at this point, but due to the ZIP code matching, it couldn't hurt to seek one out on Retrevo's site. The link also provides a handy PDF "DTV Survivial Guide" to hand out to your neighbors or relatives with unanswered questions.