"Binge Learning Is Online Learning's Killer App" has a wonderful analysis of the benefits of interest-led learning. Just exactly what we do in authentic Montessori programs.
The author's account of what can happen online reminded me of my childhood, being led from one article to the next in the encyclopedia - actually, this happens to me in Wikipedia and I'm very grateful for all the links for that reason!
Hattip Reena Kapoor