@rebel16, There should be downtime progress in that your productions accumulate and sales persist when you are not playing. Are you not seeing that?
@capcome, We are tying your accounts to your cookies so if you delete your cache or access from another computer, you won't retain your account. We are hoping to push the game as a Facebook app so that it will be tied to your FB account (we don't intend to pull any other FB data though, just a unique ID to match you with).