If the button fails to appear, add that same bit of "head" code right before the closing "body" tag. Any questions? Ask 'em in comments below! Good Luck, let me know how you make out!
WARNING! Just as I have noticed with re-tweet buttons, you may get false numbers when you are entering your blog directly on its landing page. That changes when you land on an individual post's url. Most people who find their way here via search engine or link from another blog or website land on a post URL, so I'm not too worried about it for now. Remember, I'm tinkering here - this is a "work in progress" that seems like it will do the job I need it to do - YOUR needs may be different!