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A comment on How To Opt Out of Facebook Ads Based on Your Real-Life Shopping Activity. Parent comment

Re:How To Opt Out of Facebook Ads Based on Your Real-Life Sh... by keithpeter on Monday April 29, 2013 @03:03AM (#5624507)
Predictions based on partial data could be problematic.

One example: I pay for fresh food and staples in cash, and buy 'grocery' items on a card. A data collection system that tracked only card purchases would give the impression of a very unhealthy diet.

[ Parent | on HN ]
Re:How To Opt Out of Facebook Ads Based on Your Real-Life Sh... by andyking on Monday April 29, 2013 @09:23AM (#5625938)
This is how it is for me, too. I buy fresh vegetables, fresh meat, milk, eggs, bread at a local farm shop and pay cash. I buy other things like pizza, coffee, processed foods at a supermarket and pay with card - and also scan my loyalty card.

I regularly get offers from the supermarket for money off yet more unhealthy food - they are blissfully unaware that I eat quite well in reality!

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