I have noticed that in Jetpack is inserting a wee smiley face at the bottom of the page footer.
solution:
Go into your Dashboard -> Jetpack -> WordPress.com Stats and click the configure button. Check “Hide the stats smiley face image.”
to be more specific While in the:
- Dashboard
- Select Jetpack
- in the first configuration option WordPress.com Stats
- Click Configure
- On Smiley Check Hide the stats smiley face image.
- Save Configuration
- and okay.. :)
source: http://wordpress.org/support/topic/plugin-jetpack-by-wordpresscom-remove-smiley-face-that-wp-stats-inserts-in-webpage