StateStats is an online tool that can show you how popular a Google search query is in each U.S. state.
http://statestats.appspot.com/
It then compares this ranking with other ways of ranking states, like average income or population density, using Spearman's rank correlation.
http://statestats.appspot.com/
This confirms what I have always suspected, North Carolina is more barbecue crazy than Texas. And ours is better anyway.