Surely, the KISS principle is not alive and well. As far as I can see, the plugin works flawlessly. The problem is it makes the user jump through too many hoops to use it.
First, they have to click on the graphic.
Second, they have to look for the network they want to choose.
Third, if it isn't visible, they have to click on another button to see more choices.
Fourth, finally, they can like or tweet.
How many people are likely to go through that?
I really wanted to like it.