This is why I love HN. Great advice & to the point :). We actually experimented with various msgs & lots of people resonated with the Environmental angle. Here are some mind numbing stats:
1. Over 100,000,000,000 pieces of junk mail per year sent in the US
2. 18 pieces of junk mail for 1 that you actually care about
3. Several -months- of your life spent processing junk mail (!)
4. 100s of thousands of dollars spent by cities (ie, your tax money) on post processing, landfills, etc.
& Nevermind the carbon footprint from manufacturing, processing & delivery of junk mail...
re Description: check!
Cheers,
s