Hello,
however there were valid giveaways for example from us. We were giving keys which we were encouraged to give away in the way we would like to give them away. (As long as we wouldn't sell them.)
I agree that many people use it now to gain advantage of something, even if they don't have keys. But there were people who had keys to give away!
I'd say that a moderator first has to approve the thread.
Centration for example has a key checker where i can put in a key and it will respond if its valid or not. If mods had this as well they could ask for the key, check it and say the thread is valid.