What does HTTP mean? It is define as Hyper Text Transfer Protocol. It is the language that all online browsers use to communicate when speaking to the web server.  In order to secure this HTTP you need a SSL (secure sockets Layer) protocol that provides secure communication that talks to each other using HTTP.  

This will create an HTTPS where two programs can correspond with one another to identify and agree on a source of encryption using SSL certified.  An SSL certificate can be signed by an authority that allows the web browser to verify identity of a secure site before sending sensitive and private information that if in wrong hands can cause harm to the consumer.  You can purchase SSL certificates from certified authorities such as VeriSign, GoDaddy or McAfee, and others online which verify the webmaster identity to a degree.

With so much identity theft a marketplace should take pride in securing sites to ensure that the consumer has a great experience on the site and refer more of their associates or companions over to your site.  Ensuring that their information is safe is a good way to establish better relationships with your clients. What better way than word of mouth to have serious clients back to your sites!