What is Churnalism? Well (you won't find it in your dictionary - yet) it's basically the rewriting of press releases. You'll find examples of churnalism all over the internet, and you can check the originality of the writing on this site. In their own words, it allows you to compare press releases with national newspaper articles to see whether the articles are churnalism, rather than journalism. The Churnalism churn engine will tell you what percentage of the article is cut and pasted from a given press release. The results will tell you how much of the article has been cut and paste, and how many words overlap. You can also compare the original article with possible Churnalist articles.
Here's an example.