I had an interesting conversation with Masa Maeda of Shojiki Solutions a few days ago. Somewhere in the conversation the observation that a kanban board was a value stream map (VSM) was mentioned. A value stream map shows your workflow as well as the time it takes to do the work. Here is a simple example:

I've been active in many different software development communities and user groups over the last 10 years.  Some include eXtreme Programming, Design Patterns, Lean, Lean-Agile, Scrum Development and any number of local user groups.  I most recently have begun to be active in the Kanban Software Development user group.  I have been a member of it for quite some time and know many of the participants, but hadn't been what I would call actively engaged until recently.