If you are looking to pitch journalists or publications for public relations efforts and need to know who has been covering your areas of interest, check out the Google News Timeline. Enter a search term into this Google Labs web application and the tool will display news, press releases and other data sources related to your phrase. If you click on the “Add more queries” option, you can select to view results from blogs or specific newspapers or magazines.
It’s also a great way to check out what your competitors have been releasing in the news realm.