A tract is a short literary work in pamphlet form. The pamphlets are handed out or left in places where people might discover them. Traditionally, tracts are religious in nature, meant to preach or proselytize. The invention of the printing press helped religious groups circulate persuasive material much more efficiently.
We borrowed the idea of religious tracts to disseminate our poetry, stories rants, tips, and other "preach-worthy" words. Look for them around town.