Google recommends that when you are starting your first remarketing campaign, you begin by targeting everyone who viewed your homepage. Just remember, that will increase your Google remarketing costs since your ads are being retargeted to more individuals, and you won’t be able to create ads that are quite as targeted. By targeting more narrowly, you can therefore increase ad relevancy and lower your cost per click.
No, unfortunately we can not guarantee that the absolute safety of Google Adsense Traffic. This is because we have seen instances in which websites were penalized for receiving large bulks of traffic (and clicks) to their Google Adsense ads. Therefore, if you use it, we strongly recommend you to use it in moderation and in conjunction with other traffic sources. More information >>