Chris Roane has a new post to his Montana Programmer blog talking about some of the things he's learned over the past few years in his development work.
Over the last few years I've become more familiar with multiple systems. I go over a few things that I've learned and the areas that I hope to improve upon over the next year.
His list of technology (including SVN, Drupal, WordPress and things like mailing list software and linux) serve as a good example to the wider world of developers out there to not become complacent in your skills and to be constantly learning. It doesn't have to be amazing, high level topics to be important - some of the best tools are the little things that help you work smarter and faster.