Enabling and Using SSL on OIT Web HostingEnabling and Using SSL on OIT Web Hosting
SSL encryption is highly recommended for websites these days, not just because it makes user interactions with your site more secure, but also because the major browser manufacturers are starting to mark all non-SSL encrypted sites with some kind of red symbol (red padlock, red 'X' through a padlock, etc.) to better warn users not to enter sensitive information into these sites. So, from a marketing standpoint, it's going to make your site look more professional if you turn on SSL encryption, which will keep those red warning symbols from showing.
OIT provides an article on How to Force Your Site's HTTP Traffic to HTTPS that covesr much of what you need to know to get started your site set up with SSL encryption.