I understand the concept of the Revenge button, and it is a very valid feature. However, its intent should be for use after someone attacks you, and expire after maybe 3 days. Maybe less, as when you are talking about a week later, it is hardly revenge. It is certainly finding someone that you easily dominate, then milking them continually. And now I am being attacked by people I have never attacked, or maybe attacked my first day. I honestly don't care as I am almost certain that I have received my last day of beginners rewards and there isn't much you can do to kill time without gems. But it is probably something devs should work on if they expect people to ride for the long haul.