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That happens all across the 'net though, not just on Facebook. Happens to me with Amazon all the time - they have records of me eyeing something up, I buy it a day later, and 2 days later they're still pestering me around the 'net with ads about that thing.

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FWIW, this is a co-ordination problem. There are many ad-networks that know your cookie was interested in this, however there is no singular (or multiple) way to let all of the ad-networks know that you have purchased this product, hence you get loads of ads for the same product even though you have already purchased it.

This is intentional. They're shaping your perception of the purchase by mitigating remorse.

Are you sure? I often see ads for the same type of thing but from multiple competing brands.

is this your personal guess? it sounds plausable, but... reference?

I, like novaleaf, would like some sources for your otherwise plausible sounding claim.

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