I think Zynga really need to put confirmations on using keys in the game. I know it does for some, but the amount of times there's been a glitch when i've tried to sell something and spent 10 keys on renting sale slots. And then yesterday, after spending hours filling Eddie's orders I went to sell the last item and accidentally clicked 'Add 2h' which cost 20 keys, despite the fact I had everything for the order, and there was no confirmation message. I think it is a major flaw and it is making me not want to play anymore as I spent so long getting keys just to lose them unfairly. Please consider adding confirmations to all key uses.