Plugin was easy to install and and works great! Includes share buttons using addThis! which I didn't need (already have a plugin for that) but it's a nice touch, and is actually easier to setup than the other plugin I have.
The plugin settings for open graph are a little confusing, and not really much can be set there. Appears to just be defaults in case needed. However, even without setting anything, it gives great set of open graph tags, including image and description pulled from the content. Much more thorough than any of the other free plugins I tried.
In my posts I only use the intro image, which other free plugins do not find, but this one does. Also, picked up the description from the article text, which again, other free choices did not do. So I am very happy I tried it out.