The Supreme Court ruled [PDF] today in the case of Ashcroft v. American Civil Liberties Union that a law, the Child Online Protection Act (COPA), that makes it illegal to post sexually explicit material on the Internet that has the possibility of being viewed by minors was not unconstitutional. Writing for the majority, Justice Clarence Thomas stated that using community standards to identify material that could be harmful to minors does not make the law overly broad and therefore unconstitutional under the First Amendment.
Although the majority finds that community standards are not overly broad for First Amendment purposes, the government may not enforce the law until a lower court determines whether the law is unconstitutionally vague, too broad for other reasons, or does not survive the strict scrutiny standard.
News Sources
Wired - (Kid Smut Law Needs More Work )
Politech Archive on COPA