Add Schema aggregateRating Meta Tags
If you would like to add product ratings from other sources, you can hook the 'ngfb_og' filter. Here's an example that retrieves the "average_review" and "count_review" custom fields (aka post meta). Detect YouTube URL Links as Videos
A custom filter for NGFB to detect YouTube video URL links as "embedded" videos (in order to generate Open Graph video meta tags). Modify the article:tag Keywords / Names
How to modify, add, and/or remove tags from the article:tag and hashtag lists. Modify the Home Page Title for Facebook / Open Graph
If you're using a index / archive type blog page, you can override the default title value with a custom filter like this one.