Google just changed their terms of service... That means that if you use any Google services, like Gmail, or Google Plus - they can now use your image in an ad!
I don't know about you, but I don't want my image used in any ad on Google (that I haven't authorized)!
Luckily, you can "opt out"... This article tells you how...
http://www.engadget.com/2013/10/11/g...orsements-ads/
Best wishes,
Dien