I had a search and couldn't find anyone mentioning this so here's my suggestion. How about DayZ uses a clever idea used in EVE Online: The Safe Log option. If you use the safe log off button, you see a 30 second timer onscreen counting down. You stay in game and are able to move, but not use anything. At any point during the countdown, if there is any interaction with your character by anyone (being shot at, you use items etc.) the timer is cancelled and must be started again. Once the timer runs out, your character disappears and is safe. Of course, you can just straight log out and your character sits there for the 30 seconds and possibly gets shot, axed or pants stolen, but the option is there anyway. I like this because it stops combat loggers and forces you to deal with your situation even if things aren't going your way. This would be great for a game like this because it is higher risk, it can take a very long time to build up your resources and weapons so knowing your gear is safe once you log off is important.