I have a Domain with two same-sized Leaderboards (728 x 90, Banners) and one Medium Rectangle (300 x 250, Block) on every Website. This answer says that

if you place more than one ad unit on a page, our [Google Adsense's] system will display unique ads to each ad unit.

Unfortunately the two same-sized Leaderboards often show exactly the same advert. Is this only related to personalized advertising or is this an issue of my code?

  • Perfectly normal.
    – closetnoc
    Commented May 27, 2017 at 17:24

1 Answer 1


I found out that this adbehavoir is connected to or based on personalized advertising.

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