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Mr Red Tech: How Fakebook follows you around (29) RE: Tech: How Fakebook follows you around 30 Oct 20

When you copy a link from FB it often has a mass of gibberish starting with "fbclid=". - fb & id are obvious but cl (clone?)

Well, the gibberish is part of it but I am referring to how they can (?) with simple websites just place it in a FRAME so the top.document is theirs. Or even a modified clone of my page!

The fact that my document.location.replace(u); causes problems tells me that in a new window - ostensibly separate from Fakebook - for my simple JavaScript line to cause a problemo - there has to be another script lurking that I didn't put there! There may be a clue in that I put the script in the <HEAD> not the <BODY> (I stop digging when I reach a result).

the (u) above is computed text (from the subdomain) to decide which target page the URL implies. eg   > , it then jumps to the target page - Making for a shorter more memorable URL, ie Lancaster Canal MileStones

FWIW the external link on Wiki (LC page) has no snooping frippery.

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