An educational version of YouTube is TeacherTube-Teach the World. It was launched on March 6, 2007 and its stated purpose is to share instructional videos.
I did some searches:
Science experiment – 1
Science – 25 (9 are made of students telling about an experiment)
Civil War – 6
English – 25 (Many are ESL)
Poetry -18
Math -25
Spanish – 23 (Some for learning Chinese, some commercial websites)
Some things that TeacherTube could do to improve:
– Spread the word so that more educators contribute to it and use it.
–Have people use better tags. I did not find the Dr. Altman Generating Electricity video under science experiment or science. I had to know it was Physics or Electricity. Taggers should always include the subject area, grade level, the topic, and the specific aspect of the topic. Electricity could be several other topics such as hydropower, coal burning, and nuclear reactors. Numerous taggers only use their name as the tag.
– List the time on the video in minutes. For Dr. Altman Generating Electricity the run time is in seconds such as 228 but when the video plays the time in minutes in 3:46. I think most teachers would like the time in videos.
– Some videos are very long -like 28 minutes. Student can pay attention to shorter videos of 3-5 minutes but longer ones may bore students and others. Dedicate one video to one concept.
- Limit the site to just teacher and student made videos, do not allow commercial companies in.
© Harry Grover Tuttle, 2007

Wonderful post! Hope to definitely come back again soon..