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Tell HN: Creepy Facebook Ads
Here is the sequence of events:
1. I was talking to a coworker about a brand of shoes.
2. He sent me the link to the website on slack on my desktop.
3. I opened the link on my desktop and visited the site. No facebook activity at all.
I open my facebook app on Phone and bam, I see an ad for the same shoe company.
Is facebook tracking cookies cross site ? Is this possible ? I mean how else they knew. Are they listening to conversations ?
- applecrazy 7y agoSimplest explanation: many websites embed FB trackers/Like buttons in their pages. By visiting the website, you told FB you like shoes from that company, hence the targeted ads. Occam's Razor.