This question is being debated in Congress. They want to make a law that would ban placing such information on the internet. According to Sean Silverthorne of Ziff Davis Net, this law may be unconstitutiional.
The American Communication Association is the national professional organization of scholars, students, and practitioners in the field of communication studies. This site provides information about the ACA, a collection of materials on communication law and First Amendment issues, resources for teaching and research in communication studies, and an extensive reference resource page for scholars and activists.
In sunny Long Beach California, Julie Van Camp teaches a course at California State University: Freedom of Expression: the First Amendment.