Something i thought of while making a note to myself the other day is the 'to do' function found in Mail on a mac. why can't you type a note to yourself and set a reminder? just like with SMS, email, voicemail, etc, a number would appear in the Notes icon. when you completed the task you check it and it shows it's done. i guess you could type up something in the calendar, but the notes app is just so much easier. why hasn't someone thought of this app yet?