Nowhere in the article does it say it can track what you buy, there's no way an app can track purchases you made outside of your phone unless it's somehow linked to your bank/credit card account... this is just to track where you were. Basically, Google is stalking you, nothing new there.
Your at 0 people don't want what you noticed seen. The articles quote digiday.com who say "Google declined multiple requests for comment."
and builds an article around it as they have free rein.
Remember there are companies that wish Google harm so expand upon the truth through the media,
There's one more anti-Google misleading article just behind this one, that I'm sure will make the front page soon.
This articles title was scary stuff about Google a company I've put my trust into for many years.
My searches are kept and I've known and expected that for years.
This paragraph tempers feelings felt from the subject:
"Google’s ability to make this connection is predicated on users opting in to location services on their smartphones and thus, in some cases,
being subject to constant location monitoring."
Which I'm very familiar with.
I have Googles own Motorola Xoom, it's rooted/jail broken, but you still need to add the Google applications.
I may change the OS's (update/downgrade); every time I do I'm asked if they can keep track of me and I always refuse,
nothing changes (something not working as punishment). I do feel my not opting in is indeed respected as
I'm asked to opt-in many more times while changing the setting to certain options.