Reason # 954 why I love Twitter. BudTheTeacher did one of those irresistable "Excellent discussion. http://tinyurl.com/2jfxep" tweets, which led to this post on Nathan Lowell's blog. (Nathan is one of the Smart Folks to whose brains I subscribe.)
He seeded a class discussion by outlining four barriers to educational equity (the "digital divide") and let the students have at it. Great stuff.