https://www.google.com/adsense/policies
Question: Please check the section “Ad Placement” because when I count, I got 4 google ads, 3 button referral.
If you comply with this policy, I will join you..
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Answer: Google allows publishers to display 3 ads units, 1 search (up to 2), 1 links unit and 1 referral button per product (4 products maximum), as can be read in the page you quote :
- Up to three ad units may be displayed on each Web site page.
- A maximum of two Google AdSense for search boxes may be placed on a page.
- A single link unit may be placed on each Web site page, in addition to the ad units and search boxes specified above. Link units are considered to be ’Google ads’ for purposes of these programme policies.
- A single referral button per product may be placed on a page, with a maximum of 4 products, in addition to the ad units, search boxes, and link units specified above. Referral buttons are considered to be ’Google ads’ for purposes of these programme policies.
As a general rule, we aim to comply with all of Google AdSense’s Terms Of Service since it is in our community’s best interest to respect any rule Google deems necessary to implement.

