...because it exposes and links. I know this is probably so clear to those of us who are immersed in it but I think we need to "stay on message" with other folks. Social networking, Web/Learning 2.0 - whatever - these are all aimed at exposing, revealing and linking. If your situation doesn't call for that, these technologies aren't right for you - no harm no foul. Why is this important?

...because informal learning will just stay something you do personally within your own close-knit network and not a phenomenona we understand and can use to imporove organization performance UNLESS we use some of these tools and the concepts behind them to reveal, expose and illuminate the networks of informal learning that they are creating. I have this feeling that we need a whole new lexicon for talking about the instructional impacts of furl, del.icio.us, frappr, etc. Of course, its early - I could be wrong.

P.S. Clark - you must promise to collect all of your SimWords somewhere....