The “full-service digital agency” Engage analyzed what Facebook users “liked” to produce this graph showing what people’s favorite websites say about their politics. For example, people who search the web with Bing are much more likely to vote for Mitt Romney than are Googlers. People who play Angry Birds are on aggregate a more middle-of-the-road group than the right-leaning Farmvillers. Amazon.com shoppers lean right, while the Amazon-owned shoe store Zappos has a more Obama-friendly clientele. Users of Wikipedia and Paypal are far more politically engaged than users of Etsy and Pinterest. Pretty fascinating stuff.