"Small, portable and extremely easy to use" translates to QUICK and INCONSPICUOUS while video taping in Congo. The Congolese children sees a camera and each one of them want to be Rambo or some other action hero. So, you have to be fast, quick, and sneaky to get a natural picture.
Also, I have not thought about lower resolution video is a good thing for website like YouTube.
The Flip Video Ultra has become popular because it is small, portable and extremely easy to use. But it also has become popular because its lower resolution video is the perfect format for video web sites like YouTube.