Help Center Manage Your Account Serving Code

How can I avoid duplicate ads on the same page?

A single web page can have multiple advertising ad placements. When getting serving code for any zone, you can specify the spot number for that serving code. For example, three 100x100 buttons reside next to each other (top, middle, bottom). You can set the spot number so that they serve different ads or the same creative. If you have multiple ads and zones on a page, it's recommended that you use the single-call approach instead.

• Different spot number for a different ad: If spot #1 already shows ad X then spot #2 will not show ad X again. It will show ad Y.
• Same spot number for the same ad: If spot #1 on the top shows ad X, spot #1 placed at the bottom will also show ad X again.

Please see the following diagram for more details:

Performance

Spot feature can be slow if there are many ad placements on a page. In this case, you should use the single-request ad invocation code to load multiple zones in one trip, or set the number of ads to display together within a single zone's serving code.

Other Articles in Serving Code

• Can I have ads refresh automatically without a page reload?
• How can I combine multiple ads in the same placement?
• How can I customize the interstitial ad template?
• How can I defer ads until after the page has finished loading?
• How can I put ads into my blog/website?
• How can I serve multiple ad dimensions in the same place?
• How can I serve multiple zones with a single server request?
• How can I support click tracking for external ad servers?
• How do I add current timestamp into the serving code?
• How do I set up advertising on WordPress?
• What are custom ad serving settings? Can I pass along my own ad variables?
• What are different formats of serving code?
• What are different types of serving code?
• What are interstitial ads?
• What are the effects of ad blocking software?
• What is pop-up/pop-under serving code?
• What is the serving code?
• What is WMODE for SWF ads? How can I change it?
• Where is the publisher-side file for iframe busting?
• Why doesn't the provided HTML serving code work?

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