I did a google search today for "blackout poetry" and "found poetry".
Here are a few sites you might be interested in. Click on the links below to see the websites.
Newspaper Blackout Poems
Read Write Think
Found Poetry Review
I consider my genre to be "News Print Poetry". The main difference is that I keep the topic of my poem the same as the topic in the source.
P.S.: I know newsprint is one word. I just like making it two words. First, it won't be confused with "new sprint." Second, I like to emphasize that it is news in print.