I ran across this website while looking for keywords for a related but different product. The website is:
http://mesothelioma.typepad.com/
The keyword I was researching was: upper respiratory infection
This website advertises on Google Adwords under the above keyword. There are only 3 ads so they are probably bidding the minimum 5 cents.
Notice if you click the links under "Information" on the right hand side you get another set of Google Ads on the left.
This is sort of a Google Adword leverage or arbitrage: ie - they get their traffic from advertising on Google Adwords and try to make a profit from that same traffic using higher demand keyword. For example the first ad that comes up for me is "Mesothelioma Litigation" which according to Adword Analyzer has 22 campaigns. Therefore the ad being displayed is most likely bringing in more then 5 cents for the website.
This is a very interesting model that would be worth following.
James