Boxes and Arrows is an online journal filled with peer-written design articles by contributors that tend to have experience in the industry. Anyone can suggest a topic, and readers can comment on it or even write an article on what was suggested. That being said, Boxes and Arrows has many pieces worth reading. There is a lot of information to be absorbed from this site: articles, stories, case studies, ideas, and more. I especially enjoyed the article Are your users S.T.U.P.I.D? where the author provides acronyms to help designers consider their audience and design. Pretty creative, if you ask me.
I have yet to fully explore this blog seeing as there is so much to read, but thankfully it is well organized. If you have any questions on design, be it graphic design to information design, it looks like this is the site to go to!