By nature of what we do here at React newsletter, we read a LOT of articles. Few have been as good as this one. In this article Jae walks through the importance of properly using keys and shouldComponentUpdate to help your components re-render in the most performant ways possible. If you're not already a pro with performance in React, definitely set some time aside to read this.
Lin Clark's Code Cartoons gives us another section on Facebook's Relay! Relay makes the connection between the graph in the cloud and the graph that the user is interacting with on the page.
While React has been on the scene for quite some time now, at least in the timescale of front end technologies, it can be hard to see it's impact on the web. This is especially true if you only use a single framework. Nicholas C. Zakas gives his analysis to the discussion of how React has affected the economics of dynamic web interfaces.