This nice useful utility.
It is missing one thing.
A setting to hide the tray bar icon.
Configuration of this utility is not done so often that it justifies the real estate that it takes on the tray bar.
I tried the developer site but there is no way to leave them any feedback.
The software developer responded to this review on Feb 18, 2007:
Expect an option to hide the tray icon for hot corners in the next version.
Thank you for the feedback.