Use a secure server for collecting personal information from users.

Using a secure server (https://) when collecting personal information from users is good practice for their safety and yours. Google AdWords requires that you use a secure server on the parts of your site where you collect personal information from users that found you through Google. This requires some strategic design, however, as the use of secure server sites can make search engines ignore you and stem the growth of your organic traffic. Consider linking from your ad directly to a secure page that is NOT your home page to make sure that you are pursuing a design that supports both your Pay-Per-Click campaign goals and your search engine ranking goals.