Right now, my online activities are focused on:

• The Learning Remix blogging community.  As of Winter 2007, it focuses on grad and undergrad systems integration courses at Eastern Michigan University.
• Muscle Ventures.  This is a joint venture with Nancy Arnold, owner of NCA Fitness.  We publish video exercise analyses and interviews with gym owners and fitness professionals.

I have a number  of other sites that I have maintained over the years but which are now less frequently updated:

• The Community Engine Blog