In 'google convertion tracking', I was wondering how google ensure this page is lead by google adwords and not by anything else. I think it was because a cookie was set when user click the adwords, and after that when this user visit the convertion tracking landing page, the information will be checked before google recorded it as a successful convertion. If google did not find the correct information in the cookie, it will not caculate as a successful convertion.
Who can prove it. |