That may be, but the main point I was making is that information doesn't seem to appear in places it doesn't belong. Information that I know FB has pops up everywhere.
Note that I'm not trying to say that the information FB or Google collects is OK or not. Only that I think this is why the general public is pissed off at FB and not (as much) Google.
They track you across the entire internet on unrelated websites via Google Analytics, their ad network, reCaptcha, ...
They might not directly sell this data directly to third parties (for now), but they sell it in the form of more targeted ads thanks to a better profile.
They certainly have a lot of data on you that you never intentionally gave them.