I'm a great fan of Youtube as it also encourages interactivity between creatives and audiences.
On Youtube most of the comments left along side the animations made by students on the courses I've run are very positive. They're from their friends, families and some times teachers, all very short notes of encouragement, but positive.
This is an example
"tht was sick!!! wish my teachers took time to teach with some type of character.....it must of took some time to do tht but it was well worth it bce it made for an enjoyable video"
Check out these comments left by students from all over the world, funny, positive and encouraging.