Once on screen, stickies will remain where placed until closed, even through reboots
Stickies appearance can be customised; fonts, colours and buttons may be changed, and styles saved. Stickies can be resized horizontally.
Languages other than English for the interface are also supported.
Stickies can be transferred from one machine to another either over a TCP/IP network connection, or by using a SMTP mail server:
Hierarchical friends list, which may be automatically transferred from other friends
WAV file play/PC speaker beep on receive
Signature for transmitted or emailed stickies
Favourite friends can be chosen
Stickies can be hidden (sent to sleep!) for a certain period, or until a specified date and time, to act as a reminder
International language support
Save to file/Import from file, to transfer stickies by removable media
Stickies is small and simple, it writes to a single text file, and does not touch the registry
...and Stickies is completely free!