arkady-why is an online survey a sweeping generalisation? It can be as specific and targeted as any survey I suggest. I suspect I work for the same organisation as yourself and am not aware as to any restrictions on me completing anonymous surveys, online or otherwise. In fact we have been encouraged to do so on many occassions. Chirp , BA , Ifatca to name but a few. A question about whether I think pilots are overpaid is hardly going to bring Nats or any other company to its knees. If i considered any question to be likely to compromise my companies privacy or security rules, ( not laws in most cases) , I would refrain from answering it. But I appreciate that yourself and chevvron feel the need to protect your equally well qualified colleagues.