Eric Liu shows why there is a single correct bid price you should use for a given google adword. The world is made of math, so don't hesitate to use it.
This excellent reddit comment explains the real difference between monotheism and polytheism, and it's not what you think.
Some interesting sabermetrics on the popularity of stories on the NY Times website.
A really interesting paper from the World Bank about inequality. The data in this paper is very important - it shows that the primary drive of inequality in the world is location, not class. While I don't care much about inequality specifically, I care a great deal about the poverty which underlies global inequality. This paper strongly underscores Bryan Caplan's point that immigration is one of the most important issues today. Now I just wish I understood the issue well enough to have an opinion.
Study shows no benefit to children or the economy from paid maternity leave.