Ah, the Memo Pad, the poor sister of the basic Personal Information Manager's quartet of organizing principles!
Who ever uses this app? No one I know!
When should you use this app? Use the Memo Pad when your entry is NOT an event taking place at a certain date and time (a Date Book entry); when it's not data about a person or a place with addresses and phone numbers (an Address Book entry); when it's not a task or a chore, an event with a sliding Due Date. "OK, wise-ass", you're saying to yourself, "so that's really helpful, it's NOT a Date Book entry, an Address Book entry or a To Do List entry;, so what is it?" Well, binky, like I said: it's anything else!
A Memo can be: