News Sniffer now tracks changes to New York Times news articles. A couple of interesting changes have already been discovered, such as this article that used to mention how American intelligence agents helped funnel arms to Syrian rebel groups.
You can specifically search New York Times articles using the search keyword “source:nytimes”.
Also, you can now link to specific paragraphs and they’ll be highlighted. For example, here we link to paragraph 4 of this article showing the BBC renaming the Syrian government to the Syrian regime.