Watch what you say
Times report on the Friends Reunited website criticism case (ex-teacher,won v ex-pupil, lost) means that you and PPRuNe are personally liable for damages and costs, if you post anything untrue and damaging.
This landmark case means beware of posting or emailing anything detrimental about an individual instructor, specific school or any airline.
You may believe you can justify your statements but remember that you can't get legal aid for libel and your target may have plenty of money and could easily bankrupt you, as you could not now risk going to court.