5. Will Wilkinson on social justice. A very good piece.
6. The economics of Elsevier. And more here. The upside is this: such services become obsolete over time, and if SSRN received lots of money from Elsevier, that is an incentive for someone else to do better, with an eye toward an eventual buy out. We will see how big the lock-in effect is, but I am not convinced it is enormous, if a better system were to come along. See Joshua Gans.