Source: http://lifehacker.com/5804203/remove-press-releases-from-google-news-for-more-useful-news
Google News is great, but a side effect of indexing thousands of sources for news means sometimes you'll stumble on promotional press releases and not actual news. Thankfully, Google has given us a new way to turn off press releases or blogs from your Google News feed. Here's how.
Head into your Google News preferences and you'll see some new options to help you customize which news sources are included in your feed and which ones are always excluded. You've always been able to add sites that you want to see more, less, or no news from in Google News, but you now have the same control for blogs and press releases.
At the bottom of your preferences, there are radio buttons for more, fewer, and no news at all for each option. Just toggle the Press Releases button to none to eliminate them from your news feed, and enjoy more articles from actual news sources in your Google News stream.
Hide Blogs and Press Releases from Google News | Digital Inspiration
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