When you run an online business that deals with collecting personal and financial information from your customers, it is your responsibility to provide yours customers with the assurance that all of the information they are entering on your web site is going to be protected. The best way to do this is by using an SSL Certificate that you have obtained from a reputable Certificate Authority such as Digi-Sign.
When you go through a Certificate Authority for your SSL certificate you can place the official SSL Protected seal in prominent places on your web site. This way your customers are going to know that all of the information that they are required to provide in order to make a purchase is fully protected and can in no way be read by a third party that can lead to identity theft and major financial problems for them.