Well as a matter of fact I have first-hand experience of non-disclosure agreements. I signed one myself a number of years ago, undertaking not to tell anyone that a certain major company had paid me a considerable sum of money to compensate me for their very poor behaviour over several months, during construction work they were carrying out, which had made it almost impossible at times for us to get to and from our house. The only access road had been dug up and turned into an impassible battlefield, yet they ignored my repeated requests to provide me with at least reasonable temporary access. I kept records of all my dealings with them and took lots of photos and videos to show how bad things had been. This was not a matter that ever went into the hands of legal eagles, though the two quasi-mafiosi who came to my house to do the deal probably suspected that the company's name would be mud around here if their behaviour became common knowledge (I didn't threaten them, but they were impressed, taken aback even, by my meticulous record-keeping). It's like that in Bude, which is a bit of a goldfish bowl. The NDA was clearly intended to prevent similar victims of their unreasonable behaviour in the area from finding out that they could also have the prospect of claiming compensation. I regarded that as unfair, and I took the money and ignored the NDA, though I didn't exactly megaphone the thing around town. You may regard that as immoral, but it was not anything like as immoral as leaving a remote house without proper access for weeks on end in midwinter for us, the postman, LPG deliveries (we almost ran out of gas over Christmas), and, potentially, emergency services. The NDA was intended to preserve a reputation that didn't deserve to be preserved. Pick the bones out of that lot.