Google’s relatively new Hot Trends of the Day features all the keywords you need to create your own highly optimized made for adsense (MFA) page:

The algorithm for exploiting Google Trends is simple:

• Scrape their hot-trends page in as many languages as you like
• Query technorati for that language and term and get stories
• Post some excerpts on an optimized MFA page

You could probably be making money instantly from organic serp results. If you were slightly cleverer, you could rewrite the sources full text into your own post dynamically using markov chain analysis based on the sources, and using standard english di/trigram frequencies to fill in any missing bits.

Since this is what people are looking for, this is what your pages should be on.