I'd like to recommend that in addition to finishing one of the Penpersonship skills, we have a persistent notepad located in our Rock icon to take notes.
The in-game notes could be used to notate places, make a shopping list, leave a reminder of where we "left the game" or other such reminders for when we return. The notepad could be limited to 255 characters via the flash textInputInstance.maxChars AS definition so as to keep data sizes down and would truly help us old farts out in remembering where we left off.