Need to allow Post content to be shared

We are using the floating social plugin on the posts for blog.annuity123.com. When a visitor goes to share a post, it doesn't show the post title and post content. Instead it shows the blog title and description (see screenshot image at the following link http://screencast.com/t/niLh4XkOb). Is there a way to change this so that the post title and content is shared using this plugin?