New top story on Hacker News: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?
5 by wideareanetwork | 5 comments on Hacker News.
How does google know I bought Voltaren? Is my bank purchase history shared with google somehow? I guess it could just be coincidence?

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