Americans may paint themselves in increasingly bright shades of red and blue, but new research finds one thing that varies little across the nation: the liking for online pornography.

A new nationwide study (pdf) of anonymised credit-card receipts from a major online adult entertainment provider finds little variation in consumption between states.

‘When it comes to adult entertainment, it seems people are more the same than different,’ says Benjamin Edelman at Harvard Business School.

However, there are some trends to be seen in the data. Those states that do consume the most porn tend to be more conservative and religious than states with lower levels of consumption, the study finds.

‘Some of the people who are most outraged turn out to be consumers of the very things they claimed to be outraged by,’ Edelman says.
Political divide

Edelman spends part of his time helping companies such as Microsoft and AOL detect advertising fraud. Another consulting client runs dozens of adult websites, though he says he is not at liberty to identify the firm.

That company did, however, provide Edelman with roughly two years of credit card data from 2006 to 2008 that included a purchase date and each customer’s postal code.

After controlling for differences in broadband […]