You know about Google Adsense, now it's Google Ad Links for Google Adsense publishers.
[ For who do not yet know what Google Adsense is : "Google AdSense is a fast and easy way for website publishers of all sizes to display relevant, unobtrusive Google ads on their website's content pages and earn money," — says Google. To open a Google Adsense account, please visit: https://www.google.com/adsense ]
What are Google Ad Links?
"Ad Links are a new form of text advertising that we're offering to our AdSense publishers. Using same contextual targeting algorithm that targets Google ads to your content pages, Ad Links units display a list of topics that are relevant to your page. Each topic, when clicked, brings user to a page of related advertisements", — this is how Ad Links are defined by Google.
Basically, Google Ad Links are vertically placed links of 4 or 5 keywords related to content of your page. On clicking a link, visitor is shown a list of Ads by Google on that particular keyword. If visitor clicks on an ad, you get your commission.
So, why do you need to put Ad Links in your page?
Simple. Because you want to earn maximum revenue from each of pages of your site.
According to Google, you are allowed to put max. 3 Adsense codes. But experts say that displaying too many Adsense ads in a page distract attention of visitors and they lose interest in site. Therefore it's always advised to put only one Adsense code and that too close to main content of page, to get best results.
By placing just one Adsense code and no Leaderboard or Skyscraper, are we losing out some opportunities to earn more clicks on Adsense Ads?
No. Because that's where Ad Links come in. Let me describe usage of Ad Links with an example :
I have a page on 'Engagement Rings' at : http://thewebcontent.com/Relationships/Relationships_Article_56.php I use 250x250 Square Adsense code with first paragraph of article. This code displays only 3 Adsense Ads.