There is words "Target marketing"

This is a kind of advertising gimmick. to use a user's preference for advertising from the record of purchase.

Amazon uses this ad normally, and Youtube also shows me my favourite program from my access records.

However, there is a web-site to give me a following advertisement.

"Rolex, CASIO, other popular branded watches and good find "

This web-site is Yahoo auction, though, this site might not activate "Target marketing".

Because they could know easily that I am going through opposite life of "popular branded watches" from my auction records.

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If they target me, they should hit me by the advertisement as a follow.

"Web-Camera, no guarantee of proper operation" "Used EtherCAT master" or "new battery for sale as used for note PC, released 15 years ago"