This plugin hasn't been updated in a year. it's buggy, slow, and doesn't work with google+ on your blogroll page even though it has a button for it. With the lack of updates and no response for the developer, it seems this one is going to the land of forgotten and useless plugins.
I'd recommend Hupso instead. it is freshly updated and works great. It also has simple shortcodes that allow you to turn it on and off for specific pages, or for specific categories - something that this one is sorely missing.