Selling x-rated porn (effectively all porn is x-rated) is illegal in all states. Possession is legal though.No, they wouldn't block regular porn sites.
The only form of sites they would block would be websites that defame the government, encourage treason/sedition/terrorism and those that contain child porn, torture, sexual assault, murder, etc.
Regular porn sites are legal, therefore they would not be blocked (this was stated on abc news).
EDIT: KRudd originally said he would block pr0nz, but he took this back after realising he would inevitably lose next election.
Online casino games are also illegal? Anything which is entirely based on chance is illegal online I believe, you can only place bets where there is a supposed element of skill.
Euthanasia, harm minimization resources will certainly be targeted. erowid.org, bluelight.ru, are sites you will not be allowed to see.