Who's Afraid of the OSR by Smiorgan, from the blog Department V: Sometimes it seems like anyone who tries to talk about the OSR runs into loud, braying calls of, "That's not my OSR!" Still that didn't stop Smiorgan from discussing the subject in a way that brings a bit of fresh air to the subject.
Why Do We Even Roll Dice? by +Adam Muszkiewicz, from the blog Dispatches from Kickassistan: Dice have a special place for a lot of us and in this excellent post Adam discusses why they matter in our games.
Hacking the System - Why Do It? by +Mark Knights, from the blog RPG Knights: Have you ever wondered why some Game Masters always seem to be tinkering with their preferred rule sets instead of just moving on to another game system? Mark has some excellent thoughts on the subject that may answer that question for you.
Murder Hobos and the Supply Curve of Evil by +Emily Dresner-Thornber, from the blog /project/multiplexer: Have you ever considered the far reaching impact of your players' actions on the world they're exploring? Emily has and her thoughts on the wide ranging repercussions for the world are fascinating.