Not surprising to me, but that's nothing really. What concerns me more is that they catalogue and sell all of your thinking, what you view, what you search for, what you read, where you go, how long you stay there, both online and in the real world. They know who you call, who you text, they read your gmail, they scan everything for keyword, they use your activity to train their algorithms, those algorithms are designed to figure you out and sell your behavior to any number of buyers. They are the largest, most pervasive and invasive surveillance system on the planet.
Ever wonder why Google and Gmail are free? A wise person once said, if you're not paying for it, YOU are the product.