grenv: I disagree, when you have 200-300+ games it is impossible to move on every one every day. not allowing someone to move and take vacation on any one day would discourage some people from moving on the games that they would be able to move on. It is much easier to be allowed to move whenever you want.
Of course, like anything else people will find ways to misuse anything, purposely not moving on certain games and such, but I believe removing that ability would do more hurt than good.