Comment on Social Media Marketing Tips by SEO Dave.
Currently not a way to easily add it to the bottom of a post as a widget, but it can be added at the top as a widget. I’ll think about adding another widget area at the bottom of the content of posts so buttons and other code can be added as described below.
Under the widget menu there’s a “Content Ad Widget” area, this places content at the top of a post, main use is for adding custom ads to replace the main AdSense/Chitika/Clickbank ad units, but it can be used to add all sorts of code.
Drag a new “Text Widget” into that widget area and in the body of the text widget paste this code:
Save it and view your posts, there will be a Google +1 button floating to the right of your main content.
If you want the button to float to the left change fadright to fadleft above.
I’ve added it to this site, so you can see what it looks like.
If you are running AdSense, Chitika, Clickbank ads on your site and have the main content ad shown I would suggest having the Google +1 button float the opposite way, so if you have your AdSense ad float to the right have your Google +1 button float to the left.
This will show the Google +1 button on all blog posts and static pages and the first post listed on archive pages (like the categories).