For your class...

I strongly recommend studying some of the very good YouTube community video bloggers who use this medium in a meaningful and interesting manner. Their lives have changed as a result of participating in their own unique way. These folks are a reflection of what is good on YouTube...
geriatric1927
renetto
mharris1920
bernie1927
jimsan1

There are others, but I suggest you make the effort to see how each of these people started with their first video over a year ago, what's happened in their lives, and where they are now on YouTube about a year and a half later. Very interesting and meaningful look at our humanity and how YouTube was the catalyst to communicate this. Sharing our individual history is important.