Did you know Facebook requires SSL certificates for all custom applications? (And your custom tab will be made as an application as well). Get a PositiveSSL certificate for your Facebook application - one of the most popular and affordable SSL certificates in the industry.
Among its features are easy domain validation, free site seal, 128/256 bit encryption and the fast process of issuing. Add it to your order and you'll be able to pay for the certificate in the same transaction along with your template purchase.
Please note that a dedicated IP is required for any SSL certificate, including this one. Some hosting packages include it (VPN), some don't (any shared hosting). This may mean that additional charges may be applied by your hosting provider in order to have your website hosted on a Dedicated IP.SSL Certificate for 1 Year - PositiveSSL