Image Addition to Adsense Link Unit
Google Adsense has added an image ad at the bottom of the Link Unit page. As you know when a user clicks a link in the Link Unit he is shown a full page of related ads. That page will have an image ad at the bottom from now on. This image ad will also be contextually targeted. If Google doesn’t find a suitable image ad on the same topic, it will show only the original text ads. So there is no chance of the link page looking bad with some extra blank space or irrelevant PSA. Advertisers can bid on the image ads on CPM or CPC basis meaning extra revenue for you. Have a look at the below screenshot to get a feel how it looks:
Particularly, I don’t like Link Units. A bunch of links seems odd to me. And as a reader I never bother to have a look at those units in a site. But I know many of you are using it. And obviously Google has implemented this new feature after quite a bit of testing. Their testing has shown revenue improvement for many publishers. So good luck with this new feature if you are using Link Units 
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