Have you ever wondered why that smiley face shows up on your WordPress site? The short answer is that WordPress Stats creates this smiley face and uses it for tracking. In other words, this smiley face is responsible for giving WordPress Stats the information about visitors to your site. Sorry, you can’t get rid of it completely, but you can hide it very easily.
All you have to do to rid yourself of that smiley is add the following to your theme’s CSS file.
Note: These functions are not of my own creation, simply things I have found along the way. If you are the author of this function, please let me know so I can properly credit you with your work!