Just learned about this, thought it might interest some of y'all. 
context: http://www.fastcoexist.com/1679076/what-to-do-when-youre-doored-fill-out-a-bike-accident-report-card

5000 copies for $140 plus shipping (plus you get your bike collective's name on the card!)  http://bikesafeboston.com/post/14691991745/to-all-the-people-who-have-contacted-me-about