While surfing Internet recently I've noticed that in the advertisement placed by Google the text has been changed... previously I think the text was "Ads by Google" but now it shows "AdChoices". What's the story behind all about this? is "Ads by Google" and "AdChocies" are different thing or the same, is that update of Google Adsense. I'm new to this Google Adsense. if this is update of Google Adsense then do we have to do anything or just Google changed the text only..?