That play within a time frame may be likied to a post a while back when some were discussing loading with Byg. Apparently there is a log that can tell you if the guy loaded - it outlines every action taken. So if you have to come on the forum, write a post saying you are taking the save, then make new post uploading the new save, people will see the time stamps and compare the log and so on and so forth. But you know, if someone wants to cheat - they will. So why turn a game into a chore? We're not playing for money anyway.