this is a point which has gotten a lot of attention. Search for threads with vacation, or vacation flag in them.
You can set up your vacation flag as a subscriber for 36 days. During the time you are invulnerable to timeout. But you have to move at the end, since otherwise you would time out probably some games, while trying to catch up.
So far so good.
However some people use the vacation flag to stretch their timebank. That is misuse and one can't do anything about it. You can look up threads in "Site Ideas" to see what already has been proposed.