Create and organize 3D sticky notes on your desktop or send them over the Internet.
The basic idea with a note is that is should be visible. None of the "note" sw offers this. They totally hide or smack it on top off everything. If you simply let it stay on the desktop, you succeed to 99,99%. Without it I say it is pretty useless.
Take notes and stick them to your desktop.
Program various actions to keyboard keys.
Organize your schedule and provide reminders of upcoming events.