It was evidently to show you ads. Showing ads is lightly problematic, but not inheretly evil.
The privacy concerns were pretty much hidden from the public the entire time.
The privacy concerns were pretty much hidden from the public the entire time.
Polite advertising combined with targeting is also potentially very problematic. Passive targeting (people who are interested in X do Y so I will advertise X near Y) seems fine, but it in this day and age it intersects with tracking... which brings us back around the circle.