Employees have a right to talk jointly about working conditions using facebook, just like in real life

The National_Labor_Relations_Board  made a clear stand: Employees have a right to talk jointly about working conditions using facebook, just like in real life. The board accused a company which fierd an employee after she criticized her supervisor on facebook, in illegal firing. One has to wonder whether this will hold in courts. In this case, the social-network communication was with co-workers, on a work related issue, and apparantly had some factual basis, as her co-workers agreed with her... The  usage of the digital medium might cross the line and not recieve the protection of the law if the issues discussed do not relate to work, are mainly with people who are not co-workers, or are clearly disloyal (=defamatory and untrue). Seems like the Social network is slowly replacing the coffee corner at work....