Marc Eisenstadt of the Open University, wrote some well-modulated and well-meaning advice for my future webcasts, and sent a pointer to a presentation of his on BuddySpace, "an open-source cross-platform Instant Messaging and geo-location tool called BuddySpace, which provides multiple views of collaborative workgroups based on the concept of 'active dots on geographically-accurate detailed maps', and augmented by a variety of semantically-based services."

Take a look. Unlike my recent meandering webcast on Social Tools (which ran 55 minutes!), Marc's is a concise and insightful exposition on BuddySpace.