if that were solely the case, state and local governments could prevent free speech since they are not congress.

It probably would have a much better market if you could buy an add in card from the market that would work with your motherboard. All of the add in cards that are in the market can only be used for the machine they were designed for (Thank you Intel). It does not matter if you have a machine that cost thousands of dollars last year, if the oem for the motherboard does not release a new card, you are SOL.

Over at open dns you can setup the family filter. http://www.opendns.com/home-solutions/parental-controls/