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I have couple of sites Like http://domain.com, http://sub1.domain.com, http://sub2.domain.com and suppose i have a ad block 300x250 Can i use the ads to all those sites or i should make different ad block to use in every site? Does it affect the ad relevancy?

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up vote 2 down vote accepted

The same ad block will display different adverts relevant to the content on each page it displays on. This works on a page-level, so if your site was:

http://www.fishing.com (about fishing), it would display ads that are relevant to fishing. If you have http://www.fishing.com/piano (about piano...), then you would get ads relevant to piano, from the same ad block (code).

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So, i don't have to worry about making different ad block for each site right? i can just use same ad block over and over on my all sites? – Sisir Aug 9 '11 at 10:39
Yep. :) Unless you want different size blocks, of course. – Anonymous Aug 9 '11 at 10:43

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