It works for me....
I have used the 3M Post-it (R) Software Notes for several years. My experience is that it works best for me as a reminder system. I keep three memo boards, with these tabs (the number is part of the tab name):
Alarms
1 - Urgent
2 - Back Burner
3 - Low Priority
4 - Personal
Project Board
1 - In Progress
2 - Soon
3 - Deferred
4 - Someday/ Maybe
Followup
1 - Problems
2 - Research
3 - Misc
Within some individual tabs (such as my 'Progress Board': '1 - In Progress'), I also number the individual notes, so that when I print a memo board, I will see the tabs in order, and individual notes in order within the tabs. The print memoboard option will create a good ordered list of projects IF (this is important) the tabs and notes sort out. There are several sort options for printing.
Normally I use the alarms to cover repeating "hard landscape" items: I have 13 notes currently in my 'Alarms': '1 - Urgent' tab, including reminders to visit the server room every two hours, reminding a co-worker to perform an action on Mondays and Thursdays (I used 2 notes for that), and so on. Some notes contain detailed instructions on how to perform the action, so that when the alarm goes off, how to do it is right there as well.
I also tried to set up a board tracking active projects. For me, the jury is still out as to whether this feature is really useful. While I do have a 2D board to display my notes, I am not convinced of its use. (Your mileage may vary.)
I would note that at least some of these capabilities are found in the Notes feature of Outlook (I do not use this feature, I cannot comment on it). For me, I have found it worth the price of the software for the alarm clock feature alone, and would recommend it to others on this basis. Also I note that there is a free version that places all notes on the desktop, if that is not a problem to you (I greatly prefer the memoboards).
--Phil Hair