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This week Google introduced Google Finance, which has been getting a lot of attention. They also added a feature named global trends to AdWords keyword tool. I have not seen anyone discuss the fact that Google Finance has added the ability to search and filter news volume over time, just like keyword data over time with global trends.
I was doing some playing with a client of mine, Jennifer Convertibles, Inc. (Public, AMEX:JEN) at Google Finance. I then clicked over to the more news items and found news items put into folders by month. 
So then I tried the same thing for a company that is more in the news, Yahoo and notice the graph on the top left of the page. It says, "News Volume (90 days)," plus links to articles by month. You can click on the graph columns to sort news by that time period.
This, I would imagine, can be used for search term research, much like the global trends tool can be used for financial research - if you get what I mean. Anyway, I thought this was a nice little feature of Google Finance and I wanted to bring it to light.
I added this detail to our thread on the topic at Search Engine Roundtable Forums.
