It isn't the same thing with ads like adwords: With that, you don't know exactly what you're advertising, so you have no incentive in making false claims in you

It isn't the same thing with ads like adwords: With that, you don't know exactly what you're advertising, so you have no incentive in making false claims in your article to promote it. On the contrary, when I read articles promoting books with direct links to Amazon I automatically wonder if the author really liked that book, if he is qualified to judge it, or if he is just trying to sell me what he thinks would make him the most money. Incidentally, that's exactly what happened when I followed the link to the post we're talking about :)