It has become increasingly important to use https protection on your site. All eCommerce sites should use it to protect customer's info as best as they can. But it is becoming important for sites which even just collect login details to use SSL technology to encrypt and protect users passwords, emails, etc. as it is processed. Within the next few years search engines even plan on giving priority to sites which use Https, so if there are two very similar sites, the one with SSL will always be ranked higher. Do you use SSL on your site?