This Newshour piece has most of the story:
You can read the rest in my book, Newspaper Blackout.
Newspaper + marker = blackout poetry.
This site is a companion to the book Newspaper Blackout by Austin Kleon. It's a place where anyone can share their attempts at blackout poetry.
Grab a marker and a newspaper, redact the words you don't need, and share your poem.
Follow @austinkleon on Twitter for more.