NGFB’s primary function is to create meta tags (Open Graph, Rich Pin, Twitter Card, SEO, etc.). Aside from Pinterest and Tumblr, social buttons should only share a URL to the social website. The social website then connects back to the shared URL’s webpage, reads the meta tags, and shows the results in an overlay / popup window. The Pinterest and Tumblr sharing buttons are an exception – they must include additional information, such as a caption, media type (image, video), post type, etc.
NGFB creates accurate meta tags for titles, descriptions, images, videos, products, etc. according to your content and preferences. If you decide to use social sharing buttons from other plugins, make sure they only share the URL, and not the title, description, image, etc. — otherwise they may share incorrect information about the webpage.
If don’t use the NGFB social sharing features, and you’re a bit of a performance geek, you can add the following constant to your wp-config.php file for a small performance improvement (approx. 0.0070 secs per page load).
You might also consider using the WordPress Social Sharing Optimization (WPSSO) plugin instead of NGFB. WPSSO is a fork / child of NGFB — they have the same author, the same core features and code-base, but WPSSO is distributed without the sharing buttons and their related features (making WPSSO about 20% smaller than NGFB). Additional extension plugins are also available for WPSSO, including two different sharing button extensions: