Windows 8.1 isn't as charming as you would think.

This pop-up can appear on any of the 4 corners, Randomly.

Undoubtedly the most annoying feature of Windows 8.1 is the random popup telling you that you can use corners.  I was trying to put a valid serial number and this stupid charm popped up OVER the location where I was entering the serial number. I'd made it go away and go back to giving windows a serial number and it would come back.

Seriously when Microsoft said it would make Windows 8.1 more PC friendly they were joking. Windows 8.1 isn't any friendlier then Windows 8.0.  But some idiot at Microsoft thought they would teach us how to use it by putting these charming popups to spam. This is about as useful as the "desktop Icon cleaning feature" of Windows XP, the gadgets of Windows Vista and a slew of other stupid features some moron at Microsoft thought was very cool.