I’m trying this plugin on a test blog, but it seems there’s a slight issue with the default CSS: the Facebook button placement is completely awry. It is the first button but it appears one line above the others and to the middle of the page! I thought it was a conflict between its own css and my theme, but it’s not.
Sorry just found your post. I know there are problems with the facebook button, we’ll fix this in the next release. In the meantime you can add the following to line to your css file as a temporarly fix.