A private citizen is another matter, that's why the media is very careful what they say about Sarah Palin these days, and they need to shut up about what they are saying about Rush Limbaugh or they could be charged with defamation. What the media is doing to Rush now is an example (on a large scale) of what personal cyber-bullying is--to the target. And defamation is already illegal! If defamation has occurred, then there is no NEED for more law.
If there is a need for more law, then it must be in an attempt to control something OTHER than defamation.
What, then?