Google +1 button is mandatory tool for your Blog if you want to concentrate much on SEO. According to sources, Google Plus one increases your placement on the search results page of Google.
This Plugin is very useful with Much simpler interface including SEO aspects. For More info on Plugins and SEO visit
Plugin Website
Plugin Features:
- Get votes from visitors using +1 button.
- +1 Widget which can be used where ever you like, on your blog.
- Select Posts and Pages to include/exclude.
- Customize position of button.
- Easy and advanced user interface.