How facebook team uses "custom parameters sent" in the facebook pixels? -


i checked airbnb , once applied filters on website, fired facebook pixel information in custom parameters.

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how done i.e. how can facebook show specific ads people have viewed page on our website? after fired started getting, relevant suggestions when accessed facebook through same browser. work when user logged facebook same browser?

is facebook associate pixel fired logged in facebook user on browser? , if same user comes facebook other device, he/she shown ads based on pixel?


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