Back in November'ish I took the time to sign up for DMA list, set all my monthly statements to "On-line only" and sent "Take me the hell of your list" postcards to every company that sent me catalogs. Last year the average daily mail delivery was ~12 items. Currently I average 4-5 items per day.
So a rough calculation would be: 7 less/day * 6 days * 52 weeks = 2,184 less items per year.
