Podcasts, Blogs and Wiki's
Free National Geographic Podcasts
Free Online Audio Books, Music and Podcasts for Teens
The site allows search by subject.
Has discussion webcasts and the ability to chat live with other educators about technology in education.
UTube for teachers
Has free teacher and student made educational podcasting. You can also add your own or have your students add educational PodCasts.
Teaches kids how to make videos.