Google Started Irrelevant Mobile Advertising ?

Yesterday I was googling at home from my mobile phone and I was surprised to see in Google Search result the mention of “[AD]” in the beginning of the page before the first results. My surprise wasn’t to see the service already online because I heard some rumors about it, but to see irrelevant ads to my search query “jquery form validate” and the ads displayed as you can see in the screenshot is for “Free Mobile Games – Download and Play! …”. Notice that I was using the normal Web search, not the “Mobile Web” which still in beta and certainly Google is not used to put Ads on beta sites.