Oh, and YES, OTHER sites are blocked, too.
For instance googling around a bit: http://art-or-porn.com/
Curiously, http://www.deviantart.com/ , which contains much the same soft-core content as 'art or porn - you decide', is NOT blocked... oh, until you follow the links far enough in.
The link http://browse.deviantart.com/photography/people/nude/ is blocked.
This is a 10GB plan that's got a two year contract, auto-billed on a credit card and everything, but suddenly I see sufficient cause to cancel it. Since I bought the device assuming I would be able to connect to the internet, and instead got a buggy little piece of **** with an internet connection that would make people in Saudi Arabia shake their heads at the level of arbitrary filtering that can not be disabled.