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"Google Correlate finds search patterns which correspond with real-world trends. Compare time series Many search terms vary in popularity over time. To find terms that vary in a similar way to your own time series, enter your data using the link above. Or take a look at these examples to see which search terms: "

Short and sharp article that references demand and trends etc

Five Cool Things You Can Do With WeatherSpark 1. Get three local forecasts presented in graphs. Two when outside of the US. 2. Compare the weather in San Francisco vs New York. 3. View the global climate trends. And read the details. 4. Check out the monsoon in Mumbai, India. The rain is so dominant that it cools down the air for three months, creating a yearly temperature curve that actually dips in the summer. 5. See an average late July in Houston. The thunderstorms typically roll in around 4pm. ... or tweet your own suggestion! WeatherSpark is a new type of weather website, with interactive weather graphs that allow you to pan and zoom through the entire history of any weather station on earth. Get multiple forecasts for the current location, overlaid on records and averages to put it all in context"

This looks like it may have plenty of potential.