Something is afoot in the productivity blogosphere, something which, I think, reflects a wider change in society itself. In the past year, several popular personal productivity bloggers have changed their focus, sometimes radically, or even stopped blogging altogether. At the same time, new writers have launched productivity sites that have attacked the very notion of productivity.

Mark and Aaron are runners who blog, or bloggers who run. Together, they built CompleteRunning.com, which is a website for runners. In an of itself, it’s a good site, but here’s what makes their work really cool. They’ve assembled a community called the Running Blog Family, which is made up of almost 900! runners…