Endorsing Adsense referral ads

Did you know that you can endorse Google Adsense referral ads? Refferals are CPA or cost per action ads. You earn only when the user completes a specified action,for the product/service and so you cannot earn by simply clicking the referral link.However,you are not supposed to ask visitors to click on a referral ad to make you money. However any endorsement or attention drawn to a referral google ad must be done in such a way that it supports the intended use of the product or service associated with it. Following is from the "The Inside Adsense blog": “You can endorse referral ads because you know the exact ad you are displaying on your site. You are offering your visitors genuine advice based on the products and services you think they’ll like. However, with CPC ads you don’t know which ads will show up — it would be disingenuous for you to recommend the products or services in your ads in this case, which could result in visitors being misled.”