I only use the show desktop (F12) feature for those um special occasions.
The only time when I use a hot corner is to turn on screensaver which also activates the password protection security so I know that the contents within are safe from on lookers and such.
The only time when I use a hot corner is to turn on screensaver which also activates the password protection security so I know that the contents within are safe from on lookers and such.