Regarding IE7, our Internet connection has a Google stopper, so it might be stifling the Google button. Fcebook and Twitter are there. Google+ is not visible on the combined,page or the single post page.
Yeah the google button actually comes from google, they don’t have an api yet that allows for using simple links to share to google +. Thanks for you donation they are always appreciated. Let me know if you run into any more problems or think of a new feature that you’d like to see.