This ruling will hopefully put to bed, or at least seriously hinder, those who would use the US legal system to try and stifle and censor a growing artistic medium. It sets a legal precedent for the the fact that video games are art, that games are defended by the US Constitution. It shows that the critics are wrong, and have been wrong from the start.
Seriously, guys, this is good fucking news. Maybe now people will start to recognise the potential video games have as a form of media and art, as well as entertainment.