Churnalism
Enter a press release to see which UK papers and websites have ‘churned’ it into news, complete with slick interactive visualisations of every cut ‘n’ paste.
An example: if you paste this press release into Churnalism, it shows that The Daily Mail churned it into this news item, pasting a whopping 98% of the press release directly into the published article.

So, curious readers and standards bodies can use it to uncover lazy reporting. PR outfits, companies and charities can use it to track the spread of their promotional efforts. And I’m sure folk will come up with more uses, too—under the hood it’s effectively a new type of news search/comparison engine, one that’s especially adept at spotting matching phrases, sentences and passages of text.
Tiny disclaimer: I worked on Churnalism for a couple of days early on in its development, and a friend wrote the backend.