We released a new JFBCContent plugin yesterday for adding Comments and Like functionality to your site's articles. In addition, we've released a new version of the JFBCSocial plugin as well, which is required for the content plugin to function. This version of JFBCContent adds them to all articles, not specific sections and categories. We wanted to get something out sooner than later, so we'll be adding sections/categories to the next release.
Please download these and let us know if you have any suggestions for improvement going forward. Thanks!