Hi. I am already using Adwords campaigns for one of my domains. I am starting a new domain now and may use a PBN to help boost this new domain. I also plan to run Adwords campaigns (advertising) for this new domain. Anyways, Google has a "double serving" policy where you cannot open multiple Adwords accounts for the same business or they may shut down your Adwords account. Anyways, because of Adword's "double serving" policy, I may be forced to use the same Adwords account for both domains if I want to run advertisements on these domains. I have read that people suggest not using the same Webmaster Tools account for multiple domains, especially if you are using a PBN to boost those domains. So what about using the same Adwords account for multiple domains? Has anybody had any experience using an Adwords account for multiple domains? In case one of my domains gets hit by a Google penalty one day, I want to limit the damage done to my other domains. Obviously, if a Google employee goes through my Adwords account, they can easily figure my other domains through Adwords. For people using Adwords, what steps did you take to protect yourself from Google?