Everyone knows the cool social plugin from facebook.com, Comments Box, that enables user commenting on your site, including moderation tools and distribution. You can use now for free in your OpenCart shop and get a SEO boost because Google began indexing Facebook Comments.
The module is extremely flexible and configurable and it lets you insert the Facebook comment box in any page of the shop where you want your users to comment something. It also stores all the relevant moderation settings to make it even easier to manage comments made on your site.
What customers say about Facebook Comments - OC2.x
It works like a charm for me. Thanks for your great work!