• 2011-05-24 | silos of people
• 2010-12-29 | on breaking away from hosted silos
• 2009-09-10 | Shared items from my feed reader
• 2008-10-21 | on context and identity
• 2007-09-08 | Open Education Course: week 2 reading
• 2006-01-12 | On Teaching Dossiers
• 2006-01-09 | Learning Objects: RIP or 1.0?
• 2005-10-10 | A great presentation on Identity 2.0
• 2005-09-13 | On Walled Gardens of Content
• 2005-02-27 | Drupal Vs. MovableType: Round 3