If an employee was found reading company mail in their office labeled 'Strictly Private and Confidential' they would be disciplined and probably sacked, but it's okay to publish on a website where everyone can read it? I think Channel 4 would be very annoyed that their 'Strictly Private and Confidential' letters are published for all to see.
I presume those of you who are apparently justifying it are saying that Ryanair would act this way because that is the way they are? I certainly hope you don't think it is alright to publish these letters or it tears at the very fabric of our society.