That was my best guess too, and Skype is also ubiquitous and would be extremely difficult (popularity wise) to censor. But I doubt video data is truly random -- it probably has some structure to it.
> Canonical shares post-purchase services revenue from the sale of content, applications and subscriptions through Ubuntu TV products with OEM’s and distribution / channel partners.
It's much cheaper to counterfeit old currency that is still in circulation than to invest a lot of money in trying to replicate the latest security features.
NaCl doesn't have the low level networking capabilities needed for SSH, Telnet, etc. because they would be a security risk (a "game" could run a portscanner or look for open SMB shares on the network).
This is pure speculation, but its possible that the runtime does some tricks for performance (possibly in the method dispatch routine) that the NaCl sandbox doesn't allow.
Hackers are not defined by a degree, skill or field. Hackers are defined by a thirst for knowledge and a motivation to improve or manipulate the world around them.