Just saw this at the top of my gmail account
Coming soon: Better Ads in Gmail - Gmail Help
It's Google saying they're going to change/improve the way they do ads in Gmail...
Which means this will probably come into Adwords and Search Results once they iron out the tweaks.
Better make sure your stuff is covered.
Sorry if this sounds alarmist...I just get a sense reading this that there's more than meets the eye here.