Here is an excerpt from an article on PRWeb:
Dozier Internet Law: Federal Court Recognizes Copyright Rights In Cease And Desist
Glen Allen, VA (PRWEB) January 24, 2008 – The US District Court for the District of Idaho has found that copyright law protects a lawyer demand letter posted online by the recipient (Case No. MS-07-6236-EJL-MHW). The copyright decision, in pertinent part, has been made available by Dozier Internet Law, and is the first known court decision in the US to address the issue directly. The Final Judgment calls into serious question the practice of posting lawyer cease and desist letters online, a common tactic used and touted by First Amendment groups to attack legal efforts at resolving everything from defamation to intellectual property disputes.
So if a lawyer writes you a threatening letter you can’t post it online anymore - assuming this stands. In cases like this it’s worth remembering that the legal system is also a cartel.