One of the biggest turnoffs is a website without contact information. Your customers must be able to reach you. There are many ways customers can contact you. You could display your phone number, your e-mail address, your mailing address, your instant messaging ID, your fax number, etc. Of course, that doesn't mean that you have two lists every one of them. There are some very successful online businesses that do not list their phone numbers. Whatever form of contact you p...