What is Google Correlate, you ask? I first heard of Google Correlate while listening to a TWIG (This Week in Google) podcast. This Google Lab finds search patterns which correspond with real-world trends and data.
Released late last month, Google Correlate allows you to compare time series affording you with the ability to see the popularity of many search terms and how they vary over time. It also allows you to compare search terms across the United States.
To my fellow data geeks, you can find statistical similarities between related terms, by way of line charts and scatter plots. Or even perhaps benefit from using it as a tool for keyword research. This is a neat Google lab to have fun with - enjoy!