In the name of freedom of speech, should you be allowed to call someone a skank on an internet blog?

It went way far beyond calling her a skank ie etc. This is someone that bears some sort of personal grudge against Cohen and she should have sorted her problem with her on a one to one basis. It is very cowardly hiding behind the anonymity of the web. Lines on behaviour do have to be drawn. We call all vent our opinion on others but that does not mean we can slander them without any fact or basis. The word skank is a personal opinion of another and everyone is entitled to that but calling someone a unless you can prove it is not on.