AdSense is a Google belongings. That means that as long as you play by the guidelines, you could be safe and secure together with your ads. You don’t must worry a couple of glitch in the system inflicting your site to drop in search scores. Other choices, like Infolinks and Clicksor, have a little bit more terrible reputations. They aren’t, in and of themselves, dangerous to your site.
However, as a result of they are not as carefully monitored as AdSense, they are easier to use in black hat models. This in turn implies that Google could be more likely to scrutinize any mistake you are making and potentially count them towards you.