I checked the box, it added time stamps next to the right window but no date stamps so it's a useful feature but still doesn't help in terms of knowing how long ago an older conversation happened. Also even the hour/minute stamps don't seem to show up when you open the expanded Chat Log and there doesn't seem to be a settings icon for that to check the box so I can only view the hour/minute time stamp when the chat is merged with the map. I notice it does say: "Timestamps for chat messages sent less than 24 hours ago will show as only the time, with older messages including the date as well." However stuff sent later than 24 hours might be pushed off the page into the log where no stamps seem to be enableable.