As promised, President-elect Barack Obama and his transition team have put his weekly radio address on YouTube so that all can see him deliver it. The plan is to continue doing this once he becomes president.
When students do work in Web 2.0 it is never done.
In a school once a teacher grades the paper the student is finished. In a Web 2.0 world, the student can post his/her paper on the net and people who are interested in similar topics may blog with the student.