[StefanPatelski]

"Actions you take on Google" is indeed frighteningly broad. But although I'm not a legal expert, I think that the sentence you quoted has to be interpreted in a different way when you consider the entire paragraph, which limits the scope of that sentence.

"If you have a Google Account, we may display your Profile name, Profile photo, and actions you take on Google or on third-party applications connected to your Google Account (such as +1’s, reviews you write and comments you post) in our Services, including displaying in ads and other commercial contexts. We will respect the choices you make to limit sharing or visibility settings in your Google Account."

I interpret that last sentence as "only things that are publicly shared by you are subject to being displayed". I assume that means that email, privately shared G+ posts, web searches, etc. are safe from becoming public. Although I agree it's very vague.