Nice design, works well in standard format posts

This is a very easy plugin to set up, and looks very elegant on the page. Has good customisations for padding, placement top or bottom of posts/pages, font (including inheriting from your site), several styles of buttons.
I’ve found this plugin works best with Standard image format posts. The Video and Quote formats, even with a Featured Image thumbnail, were throwing up all kinds of random images from my blog posts when shared on G+ and LinkedIn (I don’t know if that happens with the premium ‘Plus’ version). On my (Hueman) theme, the image being grabbed on sharing to G+ and LinkedIn is whatever is at the top of the post, rather then the ‘Featured Image’ thumbnail (and a random image from other posts if no actual image is at the top of the post, as when a video, etc, despite there being a set Featured Image).
But I have still given this 5 stars, as I like the look of these buttons and ease of setup, and this is a free version.