Usability 
Yamgo provides free streaming TV and prerecorded video to iPhone, Android, Symbian and other mobile phones. You do need to register to use Yamgo but registration is instant, requires only an email address and you can done without leaving the mobile site.
The service is UK based and many of the live streams including World Cup play by play are only available in the UK. Here in the US, only three live channels are listed and only one of those, the Outdoor Sport Channel actually worked.
I had better luck with the pre-recorded videos, all the ones I tried played well on both a Nokia N95 and an HTC Evo Android phone. Content is mainly sports, especially soccer. There are also a number videos covering environmental issues from Greepeace and the WWF. Source: Mobility.mobi