Hi, I know if you use multiple accounts you must ensure that cookies are deleted and IP address is different. But does the link need to be different, do Google ban the link or does it ban - they can't ban the domain, surely? Any help is appreciated.
Yes not so easy to fraud Google. They will use the landing page base domain to detect and close both your accounts. But also they will use another methods to detect you like for example two computers on the same Geo region that has the same flash version, browser version and OS version using the same keywords and similar ads.
If you have two accounts pointing to the same domain, google will argue that you could have one account with multiple campaigns pointing to the same domain - which is allowed. Or even one campagn with multiple ad groups pointing to the same domain - which is also allowed. Google will close any accounts that they determine are aimed at manipulating ad results. I wouldn;t worry about getting a domain name banned - but I would worry about you getting banned. You can easily get a new domain name - but could you easily get a new identification and credit card? Think of full implications before you fiddle - they wont take "But I didn't know" as an excuse.
Why violate Google's policies? Get an MCC account and put sub-accounts under it (which is 100% legit) rather than clearing cookies, proxying, etc...