Why SSL makes web site more trustworthy?

An SSL certificate contains verified information about the web site it secures to help users confirm that they are communicating with your web site. Extended Validation is the industry’s highest standard of verification and provides the most visible assurance to users: the address bar turns green in high-security browsers.

When you display the Site Seal, users can click the trust mark to view web site identification information, the third party that verified it, and the expiration date of the SSL certificate. In newer browsers, web site identification information may appear when users hover over the address bar. They can also click the closed padlock icon.