FOAF

A few more things to look into:

It looks like RDF is coming to Drupal. This has some interesting implications for learning spaces, and doing things that you just can't do in Blackboard.

It looks like Ning has got some new friends -- I first saw the news at everybody's favorite home for digital whispers, and Marc Andreessen confirmed it on his blog.

Marc Canter has something to say about it, and Diego Doval responds.