Child Online Protection Act

I would be interested in hearing the reactions of our First Amendment scholars to today's Supreme Court decision in Ashcroft v. ACLU, which suggests that the Child Online Protection Act is likely unconstitutional. Specifically, drawing from Catholic Social Thought, how should we resolve the tension between maintaining freedom of speech (and publication) and the desire to protect children (what about adults?) from the glut of pornography on the internet?

Thanks, Michael