The Times has revealed the identity of NightJack, a blogging detective. The Times had the legal right to reveal his indentity to the world, and as a libertarian, I would strongly support them in having that right.
The big issue here, however, is not freedom, but decency. The sad thing is that people often use their freedoms to do what is dishonourable, indecent, nasty, and not in the public interest. In my opinion, it was not in the public interest for the identity of NightJack to be made public, because he provided a very useful insight into the workings of the police in Britain. But The Times has not only acted against the public interest, they have also been very unkind to NightJack himself.
And so, may we libertarians unite in saying "We will defend to the death your right to do what you have done, but we unequivocally condemn you for using your freedom to do something that was completely immoral."