hey breakfastburrito: I know that you're only trying to warn others of what you think is not a very good idea but I don't understand this culture of whinging that has developed recently. (or maybe its always been around?)
People are constantly bashing these cadetship schemes - I hate to break it to you but they're not going anywhere! No matter how much you complain about it they are here to stay.
I would rather spend my time concentrating on my own career rather than trying to tell people how crap theirs is. Im not saying that you have bad intentions but people who apply for cadetships will not be put off by what you say, no matter how hard you try.