This is one law that should have stayed in effect. I have no desire to read or view porn and neither do most people that I know.
Many of the news articles try to make this out to be about obscene material and child porn, but such material is already prohibited in any form by federal law.
The COPA act that the Supreme court struck down today was about restricting access to material that is protected by the first amendment. COPA was all about putting additional restrictions on protected speech.
The Internet is an adult medium, just like Playboy is an adult medium, just like the New England Journal of Medicine is for adults, or Mein Kampf, or Free Republic. There's some really good non-porn articles and other content in Playboy, but do you let your children read Playboy? (Personally, I'd be more concerned if you let your kids read NEJM).
Do you give your kids Playboy? Then why given them the Internet?